Apparatus for cable routing

ABSTRACT

A communication system may include a first chassis having first and second side walls and adapted to slidably receive therein a plurality of cassettes. A first cable hanger assembly may have a first side edge hingedly coupled to the first side wall of the first chassis, the first cable hanger assembly including a plurality of first hangers adapted to support cables thereon. An axis of rotation of the first cable hanger assembly may be substantially orthogonal to a direction in which the plurality of cassettes are slideable. The cable hanger assembly may be rotatable from a first position to a second position so that during rotation from the first position to the second position, the plurality of first hangers move toward front faces of the plurality of cassettes.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of the filing dates of thefollowing U.S. Provisional patent applications, all of which are herebyincorporated by reference herein: (i) U.S. Provisional PatentApplication No. 62/710,365, filed Feb. 16, 2018 and titled “Apparatusfor Cable Routing,” (ii) U.S. Provisional Patent Application No.62/628,418, filed Feb. 9, 2018 and titled “Apparatus for Cable Routing,”(iii) U.S. Provisional Patent Application No. 62/615,195, filed Jan. 9,2018 and titled “Apparatus for Cable Routing,” (iv) U.S. ProvisionalPatent Application No. 62/581,887, filed Nov. 6, 2017 and titled“Apparatus for Cable Routing,” and (v) U.S. Provisional PatentApplication No. 62/509,281, filed May 22, 2017 and titled “Apparatus forCable Routing.”

BACKGROUND OF THE DISCLOSURE

The present disclosure generally relates to a device and a system forrouting and managing cables coupled to communication connectors,adapters, and/or ports. More particularly, the present disclosurerelates to cable routing and management systems for patch panel devices.

In communications cabinets and racks, a multitude of cables areinterconnected to one another through connectors, e.g., adapters. Acable organization unit typically has a tray or a shelf or a similarplatform, which supports the connectors. Examples of cable organizationunits include patch panels.

A patch panel houses cable connectors and in the majority of cases israck mounted. The patch panel typically is two-sided; the front of thepatch panel provides for connections to relatively short wires orcables, and the rear of the patch panel usually provides for connectionto relatively long wires or cables. This setup facilitates theperformance of temporary alterations to the front of the patch panelwithout disturbing the connections in the rear. Sometimes, the cablesconnected to the front of the patch panel may interconnect differentpatch panels and may be relatively short or may be part of longercables. The patch panel facilitates interconnecting, monitoring, andcircuit testing of equipment without necessitating costly switchingequipment.

Early applications for patch panels were for telephone exchanges, wherethey are still used albeit in a more automated form. Patch panels arealso used extensively in the entertainment industry, e.g., in recordingand television studios. They are also used in concert halls to manageconnections among equipment, e.g., microphones, speakers, and otherelectronic equipment. Patch panels are valued for such purposes not onlyfor their convenience and relative cost effectiveness, but also becausethey make it easier to identify problems such as feedback, ground loops,and static.

Traditional fiber optic cable organization units include fiber opticshelves having a single patch panel or multiple modular panels on thefront patching side of the shelf. It is desirable to provide patchpanels having increased connector port density, i.e., the number oflocations or ports per unit volume of area for providing connections. Tothis end, smaller sized connectors are increasingly being utilized.

A variety of optical fiber connectors are available, with the SubscriberConnector (SC) and the Lucent Connector (LC) being the most common. Thedifferences among the types of connectors include dimensions and methodsof mechanical coupling. For instance, SC connectors use a round 2.5 mmferrule to hold a single fiber and use a push-on/pull-off matingmechanism. The ferrule of an LC connector is half the size as that of anSC connector, measuring only 1.25 mm. LC connectors use a retaining tabmechanism, which is similar to that found on a household phoneconnector.

In data communication and telecommunication applications, smallconnectors, e.g., LC, are increasingly replacing traditional connectors,e.g., SC. The main advantage of small connectors over larger sizedconnectors is the ability to provide a higher number of fibers per unitof rack space. Since the LC connector is roughly half the size as the SCconnector, the placement of almost twice the number of connectors ispossible within the same amount of space by using the LC connectorinstead of the SC connector.

However, there are disadvantages associated with using smallerconnectors. As more connectors are placed within the same amount ofspace, accessing the connectors which is often performed by hand maypresent a challenge. Adult fingers typically have a diameter of 16 mm to20 mm. Some people may have larger or misshapen fingers. Therefore, theuse of small connectors, such as the LC having a 1.25 mm diameterferrule, may be especially problematic for technicians having larger orless dexterous hands. Commonly, LC connectors are held together in aduplex configuration with a plastic clip. While holding smaller sizedconnectors in a duplex configuration may make it easier for a technicianto access and/or remove LC connectors, it also means that two connectorsare necessarily affected by any given servicing procedure.

There is a continuing need for new devices and systems to facilitateaccessing communication adapters and/or cables supported bycommunication patching devices and systems.

BRIEF SUMMARY

According to one aspect of the disclosure, a communication systemincludes an outer housing, an inner housing, a hanger plate assembly,and a plurality of hangers. The outer housing has first and second sidewalls. The inner housing is at least partially positioned within theouter housing and has first and second side walls and is configured toreceive a plurality of patch panel devices therein in a stackedarrangement. The hanger plate assembly includes a plurality of hangerplates, the plurality of hanger plates having opposing first and secondsurfaces and including a first hanger plate hingedly coupled to thefirst side wall of the inner housing. At least one additional hangerplate is hingedly coupled to the first hanger plate, and a terminalhanger plate is operably coupled to the at least one additional hangerplate and has a free edge. The plurality of hangers is connected to thefirst surface of one of the plurality of hanger plates in a stackedarrangement, each hanger adapted to support a cable thereon. The hangerplate assembly has a pulled out condition in which the hanger plateassembly is at least partially positioned outside the outer housing, anda stored condition in which the hanger plate assembly is fullypositioned within the outer housing and the second surface of theterminal hanger plate confronts the first side wall of the innerhousing.

The inner housing may include a plurality of slots, each slot configuredto receive one of the patch panel devices therein. The hanger plateassembly may include a number of hangers equal to or greater than anumber of patch panel devices received in the plurality of slots. Aplurality of cable retainers may be connected to the first surface of aselected at least one of the plurality of hanger plates excluding thefirst hanger plate. The cable retainers may include a rounded portionextending transversely from the first surface of the selected hangerplate. The cable retainers may include a flat portion coupled to andextending transversely from the rounded portion. The selected hangerplate may be the terminal hanger plate. A cover may be hingedly coupledto the terminal hanger plate, the cover being pivotable from a firstposition exposing the cable retainers to a second position overlying thecable retainers. The at least one additional hanger plate may include anopening extending from the first surface of the second surface of the atleast one additional hanger plate to allow a cable to pass through theat least one additional hanger plate. A cable support may have a firstend coupled to the first surface of one of the plurality of hangerplates and a second free end, the second free end spaced a firstdistance from the first surface of the one hanger plate when the hangerplate assembly is in the pulled out condition, and a second distancefrom the first surface of the one hanger plate when the hanger plateassembly is in the stored condition, the first distance being greaterthan the second distance. The first end of the cable support may berotatably coupled to the first surface of the one hanger plate. Thecable support may have a telescopic configuration so that the secondfree end of the cable support is translatable toward or away from thefirst end of the cable support. The selected hanger plate may include afirst edge that is translatable relative to a second edge of theselected hanger plate. The cable retainers may be translatable along thefirst surface of the selected hanger plate from a first position to asecond position, the cable retainers being nearer a first edge of theselected hanger plate in the first position, and nearer a second edge ofthe selected hanger plate in the second position.

According to another aspect of the disclosure, a communication systemincludes a housing, a hanger plate assembly, and a plurality of hangers.The housing has an open proximal face configured to receive a pluralityof patch panel devices therein in a stacked arrangement. The hangerplate assembly includes a hanger plate having opposing first and secondsurfaces, the hanger plate extending from a first edge hingedly coupledto the housing to a second free edge. The plurality of hangers isconnected to the first surface of the hanger plate in a stackedarrangement, each hanger adapted to support a cable thereon. The hangerplate assembly has a stored condition in which the first surface of thehanger plate at least partially covers the open proximal face of thehousing and an installation condition in which the first surface of thehanger plate does not cover the open proximal face of the housing.

The housing may include a plurality of slots, each slot configured toreceive one of the patch panel devices therein. The hanger plateassembly may include a number of hangers equal to or greater than anumber of patch panel devices received in the plurality of slots. Aplurality of cable retainers may be connected to the first surface ofthe hanger plate between the hangers and the second free edge of thehanger plate. The cable retainers include a rounded portion extendingtransversely away from the first surface of the hanger plate. The cableretainers may include a flat portion coupled to the rounded portionextending toward a top or bottom edge of the hanger plate. The hangerplate may include at least one vertical slot in a top or bottom edge ofthe hanger plate configured to allow cables to pass from the firstsurface to the second surface of the hanger plate. The vertical slot maybe positioned between the plurality of hangers and the first edge of thehanger plate, or between the plurality of hangers and the second freeedge of the hanger plate. In the stored condition of the hanger plateassembly, the housing and the hanger plate may be collectivelysubstantially cylindrical. The hanger plate assembly may include anadditional hanger plate having opposing first and second surfaces, theadditional hanger plate extending from a first edge hingedly coupled tothe housing to a second free edge, the first edge of the hanger plateand the first edge of the additional hanger plate being positioned onopposite sides of the open proximal face of the housing. In the storedcondition of the hanger plate assembly, the first surface of theadditional hanger plate may at least partially overlie the secondsurface of the hanger plate.

According to still another aspect of the disclosure, a communicationsystem includes a housing and a hanger plat assembly. The housing mayhave first and second side walls and a plurality of patch panel devicesreceived therein in a stacked arrangement. The hanger plate assembly mayinclude a first hanger plate and a second hanger plate. The first hangerplate may have a side edge hingedly coupled to the first side wall ofthe housing, the first hanger plate including an exterior surface and aplurality of first hangers attached to an interior surface of the firsthanger plate in a stacked arrangement, each of the first hangers adaptedto support a cable thereon. The second hanger plate may have a side edgehingedly coupled to the second side wall of the housing, the secondhanger plate including a plurality of second hangers attached to aninterior surface of the second hanger plate in a stacked arrangement,each of the second hangers adapted to support a cable thereon. In astored condition of the hanger plate assembly, the interior surface ofthe second hanger plate may confront front faces of the plurality ofpatch panel devices, and the interior surface of the first hanger platemay confront an exterior surface of the second hanger plate. In amaintenance condition of the hanger plate assembly, the front faces ofthe plurality of patch panel devices may be exposed. The exteriorsurface of the first hanger plate may have a convex curvature, which mayextend along an entirety of the exterior surface of the first hangerplate. The interior surface and the exterior surface of the secondhanger plate may be substantially flat. The housing may include aplurality of slots, each of the slots configured to receive one of thepatch panel devices therein. A number of the plurality of first hangersmay be equal to or greater than a number of patch panel devices receivedin the plurality of slots. The housing may include a frame including abottom and a top. The frame may be formed of metal. The system mayinclude a base configured to be fixedly coupled to the bottom of theframe. The system may include a cover adapted to couple to the base andat least partially surround the frame when the hanger plate assembly isin the stored condition. The top of the frame may include a first topend extending a first distance beyond the first side wall, and a secondtop end extending a second distance beyond the second side wall. Thecover may include a first interior guide slot shaped to receive thefirst top end of the frame and a second interior guide slot adapted toreceive the second top end of the frame, the first and second interiorguide slots being positioned on opposite sides of the cover. When thefirst and second top ends of the frame are received respectively withinthe first and second interior guide slots of the cover, and the cover iscoupled to the base, the first side wall of the housing may be spaced athird distance from a first adjacent portion of an interior surface ofthe cover, and the second side wall of the housing may be spaced afourth distance from a second adjacent portion of the interior surfaceof the cover. The base may include at least one latch for latching thecover to the base. The cover may include an exterior surface having abottom end with an upward facing hook, and the at least one latch mayinclude a lever member coupled to a hook member, the hook member havinga downward facing hook adapted to engage the upward facing hook of thecover. The lever member may be in contact with an interior surface ofthe base. The lever member may be pivotably coupled to the hook memberand pivoting the lever member may draw the cover into engagement withthe base when the downward facing hook is engaged with the upward facinghook. The base may include a circumferential groove and a gasket memberpositioned at least partially within the circumferential groove. Atleast one of the base and the cover may include a circumferential grooveand a gasket member positioned at least partially within thecircumferential groove, and the other of the base and the cover mayinclude a protrusion adapted to press against the gasket member when thecover is assembled to the base. The upward facing hook may include aninterior surface continuous with an interior surface of the cover, theinterior surface of the upward facing hook being in contact with thegasket member when the cover is engaged with the base. The system mayinclude a cartridge rotatably coupled to a rear of the housing, thecartridge having a stored condition and an access condition, wherein inthe stored condition, the cartridge and a rear portion of the housingdefine a substantially closed interior space, and in the accesscondition, the cartridge and the rear portion of the housing define asubstantially open interior space. The housing may include a frame, anda first side hanger may be coupled to a first side of the frame, thefirst side hanger including a plurality of first protrusions for guidingcables. A second side hanger may be coupled to a second side of theframe opposite the first side, the second side hanger including aplurality of second protrusions for guiding cables. The system may alsoinclude a first bar having a stored condition and a maintenancecondition, the first bar positioned adjacent the side edge of the firsthanger plate and extending between a bottom of the housing and a top ofthe housing in the stored condition of the first bar, and the first barextending from the first side wall of the housing toward the second sidewall of the housing in the maintenance condition of the first bar. Thefirst bar may have a top end and a bottom end, the first bar beingpivotable about the top end to transition the first bar from the storedcondition of the bar to the maintenance condition of the bar. A secondbar may have a stored condition and a maintenance condition, the secondbar positioned adjacent the side edge of the second hanger plate andextending between the bottom of the housing and the top of the housingin the stored condition of the second bar, and the second bar extendingfrom the second side wall of the housing toward the first side wall ofthe housing in the maintenance condition of the second bar. The firstbar and the second bar may each have a top end and a bottom end, thefirst bar being pivotable about the top end thereof to transition thefirst bar from the stored condition to the maintenance condition, andthe second bar being pivotable about the bottom end thereof totransition the second bar from the stored condition to the maintenancecondition. In the stored condition of the first bar, the hanger plateassembly may be transitionable from the stored condition to themaintenance condition. In the maintenance condition of the first bar,the first bar may restrict the hanger plate assembly from transitioningfrom the maintenance condition to the stored condition. The first barmay have a curved surface shaped in accordance with a minimum bendingradius for an optical fiber. The plurality of first hangers may extendfrom a first end coupled to the first hanger plate to a second end, thesecond end including a first portion and a second portion, the firstportion defining a lip, and a latch member hingedly coupled to thesecond portion. The first portion of a first one of the first hangersmay be aligned with the second portion of a second one of the firsthangers, the first one of the first hangers being adjacent the secondone of the first hangers. The latch member may include a latch featurehaving a shape complementary to the lip. In a latched condition of afirst one of the first hangers, the latch feature of a latch membercoupled to the first one of the first hangers may be engaged with thelip of a second one of the first hangers, the first one of the hangersbeing adjacent to the second one of the first hangers. The system mayinclude a water sensor operably coupled to the housing, the water sensorincluding a first sensor component having a front face and a secondsensor component having a front face. The water sensor may also includean optical fiber extending along a nominal axis between the front facesof the first sensor component and the second sensor component so that afirst portion of the optical fiber is adjacent the front face of thefirst sensor component and a second portion of the optical fiber isadjacent the front face of the second sensor component. The first sensorcomponent and the second sensor component may be formed of a materialthat swells upon contact with water so that the first and second sensorcomponents each have a first size in a dry condition and a second sizein a wet condition, the second size being larger than the first size.The first and second sensor components may be configured such that, inthe dry condition, the first size of the first and second sensorcomponents is such that the first and second sensor components do notextend not beyond the nominal axis and the first and second portions ofthe optical fiber are substantially straight, and in the wet condition,the first and second sensor components having the second size extendbeyond the nominal axis such that the first and second portions of theoptical fiber are substantially curved. A cable organizer may be coupledto the interior surface of the first hanger plate in a position betweenthe side edge of the first hanger plate and a free edge of the firsthanger plate, the cable organizer having a plurality of ribs havingfirst portions positioned relatively close to the side edge of the firsthanger plate and second portions positioned relatively close to the freeedge of the first hanger plate. Adjacent first portions of the ribs maybe spaced apart a first distance, and adjacent second portions of theribs may be spaced apart a second distance smaller than the firstdistance. The plurality of ribs may include a top-most rib and abottom-most rib, the second portion of the top-most rib extending in adirection toward the bottom-most rib, the second portion of thebottom-most rib extending in a direction toward the top-most rib. Thefirst portion of each rib may be substantially aligned with acorresponding one of the first hangers. The cable organizer may define aplurality of cable routing paths, each cable routing path being definedby at least one surface of one of the ribs. Each cable routing path mayinclude a first portion relatively close to the side edge of the firsthanger plate and a second portion relatively close to the free edge ofthe first hanger plate, the first portions of adjacent cable routingpaths being spaced apart by a first distance, and the second portions ofadjacent cable routing paths being spaced apart by a second distancesmaller than the first distance.

According to a further aspect of the disclosure, a communication systemincludes a first patch panel system and a second patch panel system. Thefirst patch panel system may include a first housing and a first hangerplate assembly, and the second patch panel system may include a secondhousing and a second hanger plate assembly. The first housing may havefirst and second side walls and a plurality of first patch panel devicesreceived therein in a stacked arrangement. The first hanger plateassembly may include a first hanger plate hingedly coupled to the firstside wall of the first housing, the first hanger plate including anexterior surface and a plurality of first hangers attached to aninterior surface of the first hanger plate in a stacked arrangement,each of the first hangers adapted to support a cable thereon, and asecond hanger plate hingedly coupled to the second side wall of thefirst housing, the second hanger plate including a plurality of secondhangers attached to an interior surface of the second hanger plate in astacked arrangement, each of the second hangers adapted to support acable thereon. The first hanger plate assembly may include a storedcondition in which the interior surface of the second hanger plateconfronts front faces of the plurality of first patch panel devices, andthe interior surface of the first hanger plate confronts an exteriorsurface of the second hanger plate, and the first hanger plate assemblyincludes a maintenance condition in which front faces of the pluralityof first patch panel devices are exposed. The second housing may havefirst and second side walls and a plurality of second patch paneldevices received therein in a stacked arrangement. The second hangerplate assembly may include a third hanger plate hingedly coupled to thefirst side wall of the second housing, the third hanger plate includingan exterior surface and a plurality of third hangers attached to aninterior surface of the third hanger plate in a stacked arrangement,each of the third hangers adapted to support a cable thereon, and afourth hanger plate hingedly coupled to the second side wall of thesecond housing, the fourth hanger plate including a plurality of fourthhangers attached to an interior surface of the fourth hanger plate in astacked arrangement, each of the fourth hangers adapted to support acable thereon. The second hanger plate assembly may include a storedcondition in which the interior surface of the fourth hanger plateconfronts front faces of the plurality of second patch panel devices,and the interior surface of the third hanger plate confronts an exteriorsurface of the fourth hanger plate, and the second hanger plate assemblymay include a maintenance condition in which front faces of theplurality of second patch panel devices are exposed. The first patchpanel system may be positioned adjacent the second patch panel systemand a rear of the first housing may faces a rear of the second housing.The exterior surfaces of the first and third hanger plates may each havea convex curvature, and each convex curvature may extend along anentirety of the respective exterior surface. The system may include abase, a bottom of the first housing configured to be fixed to the baseand a bottom of the second housing configured to be fixed to the base.The system may include a cover adapted to couple to the base and atleast partially surround the first housing and the second housing whenthe first hanger plate assembly is in the stored condition thereof andthe second hanger plate assembly is in the stored condition thereof.

According to yet another aspect of the disclosure, a communicationsystem includes a housing having a top wall, a bottom wall, and a rearwall. A plurality of patch panel devices may be positioned within thehousing in a stacked arrangement. A hanger plate assembly may beoperably coupled to the housing and have a maintenance condition inwhich front faces of the patch panel devices are exposed and a storedcondition in which the front faces of the patch panel devices areconcealed. At least one hanging element may have a first portion coupledto a first portion of the housing and being configured to contact a wireto suspend the communication system from the wire. The at least onehanging element may include a second end portion coupled to a secondportion of the housing, the at least one hanging element forming aclosed boundary with the housing. The hanger plate assembly may includea first hanger plate and a second hanger plate, the first hanger platehaving a side edge hingedly coupled to the housing, the first hangerplate including an exterior surface having a convex curvature, thesecond hanger plate having a side edge hingedly coupled to the housing.In the stored condition of the hanger plate assembly, an interiorsurface of the second hanger plate may confront the front faces of thepatch panel devices, and an interior surface of the first hanger platemay confront an exterior surface of the second hanger plate. The hangerplate assembly may include a single hanger plate having a bottom edgehingedly coupled to the bottom wall of the housing. The at least onehanging element may include two hanging elements, the first portions ofthe two hanging elements coupled to the top wall of the housing, thesecond portions of the two hanging elements coupled to the rear wall ofthe housing.

According to another embodiment of the disclosure, a system includes anoutput cable having a first terminal end coupled to a splitter module,and a coupling element coupled to a second terminal end of the outputcable opposite the first terminal end of the output cable. A pluralityof individual cables each have a first terminal end and a secondterminal end opposite the first terminal end. The first terminal end ofeach of the plurality of individual cables may be coupled to thecoupling element, and the second terminal end of each of the pluralityof individual cables may be coupled to an output connector forconnecting to a secondary device. A plurality of optical fibers mayextend continuously from the splitter module, through the output cable,and respectively through the plurality of individual cables to theoutput connectors respectively of the plurality of individual cables.Each individual cable of the plurality of individual cables may have atransverse cross-sectional area defined by an outer surface of eachindividual cable, and the output cable may have a transversecross-sectional area defined by an outer surface of the output cable. Asum of the transverse cross-sectional areas of the plurality ofindividual cables may be greater than the transverse cross-sectionalarea of the output cable. At least one input cable may have a firstterminal end coupled to the splitter module, and at least one secondterminal end opposite the first terminal end. An input connector may becoupled to each of the at least one second terminal ends of the at leastone input cable. One input optical fiber may extend continuously betweeneach input connector and the splitter module. Each of the at least oneinput cable may have a single first terminal end and a single secondterminal end, or a single first terminal end and more than one secondterminal end. The output cable may have a diameter at the outer surfacethereof between about 2 mm and about 5 mm. Each of the plurality ofindividual cables may have a diameter at the outer surface thereofbetween about 0.9 mm and about 1.6 mm. A communication system mayinclude a plurality of the systems described above, wherein a totalnumber of the output cables is smaller than a total number of theplurality of individual cables. In the communication system, a totalnumber of the at least one input cable may be less than or equal to atotal number of the input connectors. The total number of the inputconnectors may be less than the total number of the plurality ofindividual cables. The splitter modules of the plurality of splittermodule systems may be provided in a stacked configuration within ahousing. A plurality of patch panel cassettes may be provided in astacked configuration within the housing. At least some of the outputconnectors of the plurality of individual cables may be configured toattach to ports of the patch panel cassettes. Each of the splittermodules may be provided on a splitter tray that is slidable with respectto the housing. Each of the plurality of patch panel cassettes may beslidable with respect to the housing.

According to an aspect of the disclosure, a communication system forrouting a signal from a signal provider to a signal subscriber includesan enclosure having a top and a bottom. A first chassis may bepositioned within the enclosure, and a plurality of cassettes may beslidably received within the first chassis. A second chassis may bewithin the enclosure, the second chassis coupled to the first chassisand positioned vertically adjacent (e.g. above or below) the firstchassis. The second chassis may be adapted to receive a plurality ofsplitter cassettes having splitter modules therein. A base may bepositioned within the enclosure, the base coupled to the second chassisand positioned vertically adjacent (e.g. above or below) the secondchassis, the base including a panel that, together with a front face ofthe base, forms a trough for storing cables extending between splittercassettes and the plurality of cassettes received within the firstchassis. A first panel may be coupled to a first side of the firstchassis and a second panel may be coupled to a second side of the firstchassis opposite the first side, the first panel having a first hangerunit positioned thereon for supporting the cables and the second panelhaving a second hanger unit positioned thereon for supporting thecables.

According to another aspect of the disclosure, a communication systemfor routing a signal from a signal provider to a signal subscriberincludes an enclosure having a top and a bottom. A first chassis may bepositioned within the enclosure. A plurality of cassettes may beslidably received within the first chassis. A second chassis may bewithin the enclosure, the second chassis coupled to the first chassisand positioned vertically adjacent (e.g. above or below) the firstchassis. The second chassis may be adapted to receive a plurality ofsplitter cassettes having splitter modules therein. A front face of thesecond chassis may be positioned a spaced distance from a front face ofthe first chassis so as to form a trough for storing cables extendingbetween splitter cassettes and the plurality of cassettes receivedwithin the first chassis. A bottom face of the second chassis may bepositioned a spaced distance from a top face of the first chassis sothat bottom edges of splitter cassettes received within the secondchassis are positioned a spaced distance from the top face of the firstchassis.

According to yet another aspect of the disclosure, a communicationsystem for routing a signal from a signal provider to a signalsubscriber includes an enclosure having a top and a bottom. A firstchassis may be positioned within the enclosure, and a plurality ofcassettes may be slidably received within the first chassis. A secondchassis may be positioned within the enclosure, the second chassispositioned a spaced distance from the first chassis and adapted toreceive a plurality of splitter cassettes having splitter modulestherein. A base may be positioned within the enclosure, the baseincluding a front portion and a rear portion extending a distance abovethe front portion, the first chassis and second chassis being coupled tothe rear portion of the base. A panel may be hingedly coupled to thefront portion of the base, so that a trough is formed by the panel, thefront portion of the base, and the rear portion of the base, the troughadapted to store cables extending between splitter cassettes and theplurality of cassettes received within the first chassis.

According to still a further aspect of the disclosure, a communicationsystem may include a first chassis and a second chassis. The firstchassis may be adapted to slidably receive therein a plurality ofcassettes. A second chassis may be coupled to the first chassis and maybe positioned vertically adjacent the first chassis. The second chassismay be adapted to receive a plurality of splitter cassettes havingsplitter modules therein. A base may be coupled to the second chassisand may be positioned vertically adjacent the second chassis. The basemay include a trough panel that at least partially forms a trough forstoring cables extending from the splitter cassettes respectively to theplurality of cassettes. The second chassis may be positioned beneath thefirst chassis, and the base may be positioned beneath the secondchassis. A first hanger unit may be coupled to a first side of the firstchassis, the first hanger unit including a plurality of first hangersfor supporting the cables. A second hanger unit may be coupled to asecond side of the first chassis opposite the first side, the secondhanger unit including a plurality of second hangers for supporting thecables. The first hanger unit may be coupled to a first guide panel thatis hingedly coupled to the first side of the first chassis. The firstguide panel may include a plurality of fins each extending between afirst end and a second end, the plurality of fins configured to guidethe cables. The first ends of the plurality of fins may be positionedadjacent a first side wall of the first chassis and extend to the secondends in a direction away from the first side wall and toward the trough.The plurality of fins may include a first fin, a second fin, and a thirdfin. The first end of the first fin may be positioned adjacent a top ofthe first chassis. The first end of the second fin may be positionedbetween the first end of the first fin and the second chassis, and thesecond end of the second fin may be positioned closer to the first sideof the first chassis than is the second end of the first fin. The firstend of the third fin may be positioned between the first end of thesecond fin and the second chassis, and the second end of the third finmay be positioned closer to the first side of the first chassis than isthe second end of the second fin. A first group of the cassettes may bepositioned adjacent the top of the first chassis, a second group of thecassettes are positioned beneath the first group of cassettes, and athird group of the cassettes may be positioned beneath the second groupof cassettes. The first end of the first fin may be positioned adjacenta top of the first group of the cassettes, the first end of the secondfin may be positioned adjacent a top of the second group of thecassettes, and the first end of the third fin may be positioned adjacenta top of the third group of the cassettes. The trough panel may becoupled to the base. The trough panel may include a first panel faceextending in a first direction substantially parallel to a front face ofthe first chassis from a first side end to a second side end. The troughpanel may include a first side panel extending from the first side endof the first panel face in a second direction substantially orthogonalthe first direction. The trough panel may include a second side panelextending from the second side end of the first panel face in the seconddirection. The system may include an enclosure housing the first chassisand the second chassis. The second chassis may include a first sectionhaving an interior volume and a second section having an interiorvolume, the interior volumes of the first section and the second sectionbeing separated by at least one wall, the first section configured toreceive a first group of the splitter cassettes, the second sectionconfigured to receive a second group of the splitter cassettes.

According to a further aspect of the disclosure, a communication systemmay include a first chassis having first and second side walls andadapted to slidably receive therein a plurality of cassettes. A firstcable hanger assembly may have a first side edge hingedly coupled to thefirst side wall of the first chassis, the first cable hanger assemblyincluding a plurality of first hangers adapted to support cablesthereon. An axis of rotation of the first cable hanger assembly may besubstantially orthogonal to a direction in which the plurality ofcassettes are slideable. The cable hanger assembly may be rotatable froma first position to a second position so that during rotation from thefirst position to the second position, the plurality of first hangersmove toward front faces of the plurality of cassettes. In an embodiment,a second chassis may be coupled to the first chassis and positionedvertically adjacent the first chassis, the second chassis adapted toreceive a plurality of splitter cassettes having splitter modulestherein. In that embodiment, a base may be coupled to the second chassisand positioned vertically adjacent the second chassis, the baseincluding a trough panel that at least partially forms a trough forstoring cables extending from the splitter cassettes respectively to theplurality of cassettes. The second chassis may be positioned beneath thefirst chassis, and the base may be positioned beneath the secondchassis. In an embodiment, a second cable hanger assembly has a secondside edge hingedly coupled to the second side wall of the first chassis,the second cable hanger assembly including a plurality of second hangersadapted to support cables thereon, an axis of rotation of the secondcable hanger assembly being substantially orthogonal to the direction inwhich the plurality of cassettes are slideable. In a stored condition ofthe system, an interior surface of the second cable hanger assemblyconfronts the front faces of the plurality of cassettes, and an interiorsurface of the first cable hanger confronts an exterior surface of thesecond cable hanger assembly. The plurality of first hangers may becoupled to a first guide panel of the first cable hanger assembly, thefirst guide panel including a plurality of fins each extending between afirst end and a second end, the plurality of fins configured to guidethe cables. The first ends of the plurality of fins may be positionedadjacent the first side wall of the first chassis and extend to thesecond ends in a direction away from the first side wall and toward abottom of the first chassis. The plurality of fins may include a firstfin, a second fin, and a third fin. The first end of the first fin maybe positioned adjacent a top of the first chassis. The first end of thesecond fin may be positioned between the first end of the first fin andthe bottom of the first chassis, and the second end of the second finmay be positioned closer to the first side wall of the first chassisthan is the second end of the first fin. The first end of the third finmay be positioned between the first end of the second fin and the bottomof the first chassis, and the second end of the third fin may bepositioned closer to the first side wall of the first chassis than isthe second end of the second fin. A first group of the cassettes may bepositioned adjacent the top of the first chassis, a second group of thecassettes may be positioned beneath the first group of cassettes, and athird group of the cassettes may be positioned beneath the second groupof cassettes. The first end of the first fin may be positioned adjacenta top of the first group of the cassettes, the first end of the secondfin may be positioned adjacent a top of the second group of thecassettes, and the first end of the third fin may be positioned adjacenta top of the third group of the cassettes. In an embodiment, the firstposition of the cable hanger assembly is a maintenance condition and thesecond position of the cable hanger assembly is a stored condition, thefront faces of the plurality of cassettes being exposed in themaintenance condition. A base may be configured to be fixedly coupled toa bottom of the first chassis, and a cover may be adapted to couple tothe base and at least partially surround the first chassis when thefirst cable hanger assembly is in the stored condition. The base mayinclude at least one latch for latching the cover to the base, whereinthe cover includes an exterior surface having a bottom end with anupward facing hook, and the at least one latch may include a levermember coupled to a hook member, the hook member having a downwardfacing hook adapted to engage the upward facing hook of the cover. Afirst side hanger may be coupled to the first side wall of the firstchassis, the first side hanger including a plurality of firstprotrusions adapted to guide cables. The first cable hanger assembly maybe rotatable a maximum of about 180 degrees about the axis of rotation.The plurality of cassettes may include patch panel cassettes and storagecassettes.

BRIEF DESCRIPTION OF THE DRAWINGS

By way of description only, embodiments of the present disclosure willbe described herein with reference to the accompanying drawings, inwhich:

FIG. 1A is a front perspective view of a communication patching systemincluding multiple patch panel devices shown in a first state;

FIG. 1B is the communication patching system of FIG. 1A shown in asecond state;

FIG. 1C is a front perspective view of a housing and cable trough,without a patch panel device placed therein;

FIG. 2A is one of the patch panel devices of FIG. 1A shown in a firststate;

FIG. 2B is the patch panel device of FIG. 2A shown in a second state;

FIG. 2C is an enlarged view of the indicated area of FIG. 2B;

FIG. 3A is a perspective view of another embodiment of a patch paneldevice including a plurality of attachment members;

FIG. 3B is a perspective view of the patch panel device of FIG. 3A inwhich cables have been separated from one of the attachment members;

FIG. 3C is a perspective view of one of the attachment members of FIG.3A shown in a first condition;

FIG. 3D is a perspective view of one of the attachment members of FIG.3A shown in a second condition;

FIGS. 4A-C are top cutaway views of a cable management system having acable guide in different states of operation;

FIG. 4D is a perspective view of the cable management system of FIGS.4A-C;

FIG. 5A is an enlarged perspective view of the cable guide of FIGS.4A-C;

FIG. 5B is an enlarged perspective disassembled view of the cable guideof FIGS. 4A-C;

FIG. 5C is a top view of a portion of the cable guide of FIGS. 4A-C;

FIG. 5D is a rear perspective view of a portion of the cable guide ofFIGS. 4A-C;

FIG. 6A is a perspective view of a portion of the cable guide of FIGS.4A-C with cable retaining features;

FIG. 6B is a cross-section of a portion of the cable guide of FIGS. 4A-Cwith alternative cable retaining features;

FIG. 6C-D are top and perspective views, respectively, of an alternateembodiment of the cable guide of FIGS. 5C-D;

FIG. 6E is a cross-section of a portion of the cable guide of FIG. 6D atline E-E in an exemplary installed state;

FIG. 7 is a perspective view of the cable management system of FIGS.4A-C showing additional cable routing features;

FIG. 8A is an exploded view of a cassette for use in a cable managementsystem;

FIG. 8B is a perspective view of the cassette of FIG. 8A in a firststate;

FIG. 8C is a perspective view of the cassette of FIG. 8B in a secondstate;

FIG. 8D is a cross-section of a portion of the cassette of FIG. 8A atline 8-8 indicated on FIG. 8B;

FIG. 8E is a cross-section of the portion of the cassette shown in FIG.8D with an insert component provided therein;

FIG. 9A is a perspective view of a chassis for use with cassettes suchas that shown in FIG. 8A;

FIG. 9B is a perspective view of the chassis of FIG. 9A with cassettespositioned therein;

FIGS. 10A-B are perspective and top views, respectively, of a patchpanel system with a hanger plate assembly in a stored condition;

FIG. 10C is a top view of the hanger plate assembly of FIG. 10A;

FIG. 10D is an enlarged perspective view of a portion of the hangerplate assembly of FIG. 10A;

FIGS. 10E-F are perspective and top views, respectively, of the patchpanel system of FIG. 10A with the hanger plate assembly in anintermediate position;

FIGS. 10G-H are perspective and top views, respectively, of the patchpanel system of FIG. 10A with the hanger plate assembly in a pulled outcondition;

FIGS. 10I-J are top views of the patch panel system of FIG. 10Aillustrating an exemplary installed configuration of components of thesystem;

FIGS. 11A-B are perspective and top views, respectively, of a patchpanel system with a hanger plate assembly in a stored conditionaccording to an alternate embodiment;

FIG. 11C is a top view of the hanger plate assembly of FIG. 11A in astored condition;

FIG. 11D is a perspective view of the hanger plate assembly of FIG. 11Ain a pulled out condition;

FIGS. 11E-F are top and perspective views, respectively, of the patchpanel system of FIG. 11A with the hanger plate assembly in a transitionposition;

FIGS. 11G-H are top and perspective views, respectively, of the patchpanel system of FIG. 11A with the hanger plate assembly in a pulled outcondition;

FIG. 12 is perspective view of an alternate patch panel system with twohanger plate assemblies in a pulled out condition;

FIG. 13A is a perspective view of another patch panel system with twohanger plate assemblies in a stored condition;

FIG. 13B is a perspective view of the patch panel system of FIG. 13A ina pulled out condition;

FIG. 13C is a top view of the patch panel system of FIG. 13A in a pulledout condition with portions of the housing of the patch panel systemomitted;

FIG. 13D is a perspective front view of the patch panel system of FIG.13A in a stored condition with portions of the housing of the patchpanel system omitted;

FIG. 13E is a perspective rear view of the patch panel system of FIG.13A in a stored condition with portions of the housing of the patchpanel system omitted;

FIG. 13F is a top view of the patch panel system of FIG. 13A in a storedcondition with portions of the housing of the patch panel systemomitted;

FIG. 13G is an isolated perspective view of a plate guide and lockingelement for guiding and locking the hanger plate assembly to the storedcondition;

FIGS. 14A-B are schematic views of a portion of the patch panel systemof FIG. 13A with a hanger plate assembly in the pulled out condition andthe stored condition, respectively;

FIGS. 14C-D are schematic views of the hanger plate assembly of FIGS.14A-B in the pulled out and stored condition, respectively, with a firstmodification;

FIGS. 14E-F are schematic views of the hanger plate assembly of FIGS.14A-B in the pulled out and stored condition, respectively, with asecond modification;

FIGS. 14G-H are schematic views of the hanger plate assembly of FIGS.14A-B in the pulled out and stored condition, respectively, with a thirdmodification;

FIG. 15A is a perspective view of another embodiment of a patch panelsystem with hanger plate assemblies in an open condition;

FIG. 15B is a top view of a cassette of the patch panel system of FIG.15A;

FIGS. 15C-D are perspective and top views, respectively, of the patchpanel system of FIG. 15A with hanger plate assemblies in a storedcondition;

FIGS. 16A-B are schematic illustrations comparing cable bend angles ofthe patch panel systems of FIGS. 13A and 15A in the stored condition ofthe hanger plate assemblies, respectively;

FIG. 17 is a perspective view of a cover for use with the patch panelsystem of FIG. 15A;

FIG. 18 is a perspective view of a modified version of the patch panelsystem of FIG. 15A;

FIGS. 19A-D are exploded perspective views of a patch panel system withhanger plate assemblies in a maintenance condition according to anotheraspect of the disclosure;

FIGS. 20A-D are perspective views of the patch panel system of FIGS.19A-D with hanger plate assemblies in the maintenance condition;

FIGS. 21A-B are perspective views of side hangers of the patch panelsystem of FIGS. 19A-D;

FIGS. 21C-E are cross-sections of different options of coupling a frameto a base of the patch panel system of FIGS. 19A-D;

FIG. 21F is a perspective view of a bracket for use with the patch panelsystem of FIGS. 19A-D;

FIG. 21G illustrates an exemplary gasket for use in providing at a portof the patch panel system of FIGS. 19A-D through which a cable may pass;

FIG. 21H illustrates the gasket of FIG. 21G in an installed state;

FIG. 21I illustrates an alternate gasket for use in an alternate portsimilar to that shown in FIG. 21H;

FIGS. 21J-M illustrate the use of biasing members with gaskets similarto that of FIG. 21G arranged to maintain a seal over time;

FIG. 22A is a cross-section of a cover for use with the patch panelsystem of FIGS. 19A-D;

FIG. 22B is a cross-section of the cover of FIG. 22A taken along adifferent plane;

FIG. 23A is a perspective view of a hanger unit in an open or unlockedcondition for use with the patch panel system of FIGS. 19A-D;

FIGS. 23B-C are perspective views of the hanger unit of FIG. 23A in aclosed or locked condition;

FIGS. 24A-B are bottom perspective views of a cover latched to a base ofthe patch panel system of FIGS. 19A-D;

FIG. 24C is a cross-section of one example of a latch shown in FIGS.24A-B;

FIG. 24D is a cross-section of another example of a latch shown in FIGS.24A-B;

FIG. 24E is a cross-section of a latch of FIGS. 24A-B showing twodifferent positioning options of the latch;

FIGS. 24F-G are side and cross-sectional views, respectively, of anotherexample of a latch for use in latching the cover to the base;

FIGS. 24H-I are cross-sections of another example of a cover and a basein an unlatched and latched condition, respectively;

FIGS. 24J-K are cross-sections of a further example of a cover and abase in an unlatched and latched condition, respectively;

FIG. 24L is a perspective view of another example of a latch for use inlatching a cover to a base;

FIG. 24M is a perspective view of a further example of a latch for usein latching a the cover to a base;

FIG. 24N is a perspective view of an example of a fastener system thatmay be used to seal a cover to a base in an unfastened condition;

FIG. 24O is a perspective view of the fastener system of FIG. 24N in afastened condition;

FIG. 25A is a perspective view of a bar accessory for use with the patchpanel system of FIGS. 19A-D, the bar accessory positioned in a stored orinstalled condition;

FIG. 25B is a perspective view of the bar accessory of FIG. 25A in anopen or maintenance condition;

FIG. 25C is a top view of the bar accessory of FIG. 25A in the storedcondition, with corresponding hanger plates shown in open and closedconditions;

FIG. 25D is an isolated perspective view of one of the bar accessoriesof FIG. 25A;

FIG. 26A is a perspective view of a water sensor for use with the patchpanel system of FIGS. 19A-D;

FIG. 26B is a top view of the water sensor of FIG. 26A in a drycondition;

FIG. 26C is a top view of the water sensor of FIG. 26A in a wetcondition;

FIG. 27A is a perspective view of a double patch panel system withhanger plates in an open or maintenance condition, the system includingtwo patch panel systems similar to those shown in FIGS. 19A-D;

FIG. 27B is a perspective view of the double patch panel system of FIG.27A with hanger plate assemblies in a closed or installed condition andsupported on a sliding shelf;

FIG. 28A is a perspective view of two individual cassettes of the patchpanel system of FIGS. 19A-D;

FIG. 28B is an isolated perspective view of a cable disconnected from astorage rack;

FIG. 28C is an isolated perspective view of a cable connected to thestorage rack of FIG. 28B;

FIG. 28D is an isolated perspective view of a cable disconnected from analternate version of a storage rack;

FIG. 28E is a schematic view of a plurality of splitter modules havingcables extending therefrom;

FIG. 28F is a schematic view of a plurality of splitter modules similarto FIG. 28E with an output cable extending from each of the splittermodules;

FIG. 28G is a schematic view of a coupling between one of the outputcable of FIG. 28F and a plurality of individual cables exiting thecoupling;

FIG. 28H is a schematic view of splitter modules similar to those shownin FIG. 28F illustrating additional input cables to the splittermodules;

FIG. 29A is a perspective view of a recording sheet attached to thepatch panel device of FIGS. 19A-D, the recording sheet in a storedcondition;

FIG. 29B is a perspective view of the recording sheet of FIG. 29A in astored condition;

FIG. 30A is a perspective view of a patch panel system with hangerplates in a stored or installed condition according to another aspect ofthe disclosure;

FIG. 30B is a perspective view of the patch panel system of FIG. 30Awith hanger plates in an open or maintenance condition;

FIG. 31A is a perspective view of a patch panel system with a hangerplate in a stored or installed condition according to yet another aspectof the disclosure;

FIG. 31B is a perspective view of the patch panel system of FIG. 31Awith the hanger plate in an open or maintenance condition;

FIG. 31C is a perspective view of a further embodiment of a patch panelsystem similar in certain respects to the system of FIG. 31A;

FIG. 32A is a perspective view of yet another embodiment of a patchpanel system with hanger plates in an open or maintenance condition;

FIG. 32B is a perspective view of a patch panel system similar to thepatch panel system of FIG. 32A with slidable hanger assemblies;

FIG. 32C is a perspective view of a patch panel system similar to thesystem of FIG. 32B with hanger assemblies that move in unison;

FIG. 32D is a partial view of an alternate version of a hanger assemblythat may be used in place of the hanger assemblies of FIGS. 32B-C;

FIGS. 33A-33B are front and perspective isolated views, respectively, ofa cable organizer for use with patch panel systems of the presentdisclosure;

FIGS. 33C-D are views of the cable organizer of FIGS. 33A-B in use withthe patch panel system of FIGS. 19A-D, without and with cables,respectively;

FIG. 34 is a perspective view of a communication system according toanother embodiment of the disclosure;

FIG. 35 is a front view of a communication system according to a furtherembodiment of the disclosure;

FIG. 36A is a perspective view of a communication system according toyet another embodiment of the disclosure;

FIG. 36B is a perspective view of the communication system of FIG. 36Awith certain additions and alterations;

FIG. 36C is a schematic view of certain cables coupled to and guided bycomponents of the system of FIG. 36B;

FIG. 36D is another perspective view of the system of FIG. 36B;

FIG. 36E is a perspective view of the system of FIG. 36D with a hangerunit on a cable guide in a different position than shown in FIG. 36D;

FIGS. 36F-G are views of the system of FIG. 36G mounted within anexample of a housing;

FIG. 36H is a perspective view of a chassis of the system of FIG. 36Bwith splitter cassettes received therein;

FIG. 36I is a perspective view of a chassis similar to that shown inFIG. 36H with a locking bar in an unlocked position;

FIG. 36J is a perspective view of the chassis of FIG. 36I with thelocking bar in a locked position;

FIG. 36K is a perspective view of an example of one of the splittercassettes of FIG. 36H; and

FIGS. 37A-C are various views of a hanger unit according to anotheraspect of the disclosure.

DETAILED DESCRIPTION

Particular embodiments of the present disclosure are described withreference to the accompanying drawings. In the figures and in thedescription that follow, in which like reference numerals identifysimilar or identical elements, the term “proximal” refers to the end ofthe device that is closest to the operator or user during use, while theterm “distal” refers to the end of the device that is farther from theoperator or user during use.

Now referring to FIGS. 1A-C, a communication patching system 100 mayinclude a housing 2, e.g., a rack or a cabinet. The housing 2 may definea length L, a height H, and a width W1. The housing 2 may support one ormore patch panel devices 110, with each device 110 held in verticalalignment with a guide rail 2 b (FIG. 1C), a plurality of which may alsobe disposed in vertical alignment along at least one side of the housing2. A cable trough 4 may be positioned adjacent to the housing 2, forexample at a proximal corner, a distal corner, or intermediate theproximal and distal corners. The cable trough 4, which may be attachedto the frame of the system 100 (which may include, e.g., poles, walls,and other supports), may be configured to receive therein a plurality ofcables C extending vertically therethrough. The cable trough 4 may takeany suitable form to house and guide cables including, for example, aplurality of guide rings, a groove or other hollow passageway.

Each patch panel device 110 may include a plurality of adapters or ports7, each port 7 having a receptacle 5 for securing a cable C (FIG. 1B)therein. The receptacle 5 of the port 7 may be operatively coupled toone or more cables C, e.g., the receptacle 5 may be in a simplex or in aduplex configuration. The port 7 may include a mounting portion 51 thatframes the port 7 and facilitates securing of the port 7, or thereceptacle 5, to connection means, e.g., rails 41, 43 (FIG. 2C). In someembodiments, the mounting portion 51 of the port 7 may be integrallyformed with the port 7 or may be a separate component coupled to thereceptacle 5, and in some embodiments the mounting portion 51 may form apart of a connection means to which the receptacle 5 is connected, asdescribed below.

The patch panel device 110 may include a tab 11 on either end of thepatch panel device 110 to facilitate a user grasping or handling of thepatch panel device 110. The density of the number of ports 7 supportedby the housing 2 may be a function of the dimensions of the housing 2.As shown in FIG. 1A, the ports 7, each of which has a width x and aheight y, may be arranged in rows and columns in which the number ofrows of ports 7 is directly correlated to the height H and the number ofcolumns of ports 7 is directly correlated to the width W1.

The communication patching system 100 may be transitionable between afirst state (FIG. 1A) and a second state (FIG. 1B). In the first state,the one or more patch panel devices 110 may be positioned at a firstlocation with respect to the proximal end or face P of the housing 2. Asshown in FIG. 1A, the patch panel devices 110 may be substantially flushwith respect to the face P of the housing 2. In the second state, one ormore of the patch panel devices 110 may be disposed proximally in thedirection of arrow Z away from the proximal end or face P of the housing2. As the patch panel device 110 is moved proximally, the ports 7 may betransitioned to be spaced apart from one another by a gap or spacingdistance d (FIG. 1B).

The patch panel device 110 may be transitionable between first andsecond states, as shown best in FIGS. 2A and 2B respectively. The patchpanel device 110 may include bars 19, which facilitate mounting of thepatch panel device within the housing 2 by securing one of the bars 19on each of opposite sides 2 a of the housing 2. A hinged arm member 114,which includes a first arm section 21 and a second arm section 31, maybe slidably connected to the bar 19. The first arm section 21 mayinclude a slot 25 which is configured and adapted to receive a pin 27therethrough. The pin 27 may secure the first arm section 21 to the bar19 while permitting the first arm section 21 to slide relative to thebar 19 along the length of slot 25. The first arm section 21 and thesecond arm section 31 of the hinged arm 114 may be pivotably connectedto one another by a hinge 33, thereby facilitating the rotation of thesecond arm section 31 relative to the first arm section 21.

The ports 7 may be operably coupled to a connection means 16. As theconnection means 16 transitions from a first length equal to width W1(FIG. 2A) to a second, expanded width W2 (FIG. 2B), the ports 7 maymove, or be moveable, to be positioned in a spaced apart relation. In anembodiment, the ports 7 are spaced apart. The ports 7 may beequidistantly spaced apart by equal gaps or spacing distances d.However, the spacing distances d between adjacent ports 7 may differ,i.e., be non-uniform, in the second state. In addition, individual ports7 may be slid or moved along the length of the connection means 16,thereby facilitating adjustment of the gap or spacing distances dbetween adjacent ports 7 as desired by a user.

It is contemplated that the hinged arm member 114 may include a lip (notshown) that interacts with a groove (not shown) defined within the bar19 along a portion or substantially the entire length of the bar 19 toprovide added stability and controlled movement of the hinged arm member114 relative to the bar 19.

As shown best in FIG. 2C, the connection means 16 may include one ormore telescopic rails 41, 43 that are slidable to adjust the overalllength of the connection means 16. Although shown in FIG. 2C as havingtwo parallel rails 41, 43, a single rail may be used. It should be notedthat the greater the overall length of the connection means 16, thegreater the gap or spacing distance d achievable between adjacent ports7. Each of the parallel rails 41, 43 may include alternating sections 41a, 41 b and 43 a, 43 b respectively. Sections 41 a, 43 a may beconfigured and adapted to slide within sections 41 b, 43 b respectively,where the ports 7 may be coupled to the sections 41 b, 43 b, to effectlengthening or shortening of the connections means 16. A resilient orbiasing member (not shown) may be placed within a hollowed out center ofeach of the rails 41, 43 to bias the connection means 16 to one of thefirst or second dimensions W1, W2, respectively.

The sections 41 b, 43 b may define an open circumference such that theports 7 will not obstruct movement of the alternating sections 41 a, 41b and 43 a, 43 b relative to one another such that the ports 7 may bemoved in closer proximity to one another. In addition, the lengths ofthe alternating sections 41 a, 41 b and 43 a, 43 b may be selected tofacilitate placement of the ports 7 in close proximity to one another,such that adjacent ports contact each other. Each port 7 may be securedto the rails 41, 43 in a variety of ways or may be integrally formedwith the rails 41, 43. It is contemplated that in other embodiments, therails 41, 43 may be substituted with different connection means. In anembodiment, the rails 41, 43 may be substituted with elastic bands. Avariety of other configurations may be used to effect lateral, angular,or other spacing between ports in a patch panel device to increaseaccess to the ports, such as those described in greater detail in U.S.Patent Publication Nos. 2014/0355217, 2014/0357118, and 2014/0354131,the disclosures of which are hereby incorporated by reference herein.

For example, another embodiment of a patch panel device is describedwith reference to FIGS. 3A-3D. A patch panel device 210 may include aplurality of attachment members 232 that are positioned adjacent to oneanother. Each attachment member 232 may include a movable member 246,which is rotatable or pivotable relative to a movable member of anotherattachment member 232. The movable members 246 of adjacent members 232may be operatively coupled to one another to permit rotation of one ofthe movable members 246 relative to the other movable member. In anembodiment, the movable members 246 may be coupled to one another in asnap-fit connection that permits radial movement of the movable members246 relative to one another. At least two securement members 244 may besecured to opposing ends of the plurality of attachment members 232 andsecure the attachment members 232 to a tray 231. In another embodiment,a securement member 244 may be positioned between each of the movablemembers 246. Each of the movable members 246 may be operatively coupledto one or more cables C1, which are shown only in part. The movablemember 246 may include a cable adapter or connector 249, which mayinclude a front surface 249 a that may be operatively coupled to onecable C1 and a back surface 249 b that may be operatively coupled toanother cable C1. The movable member 246 may include a receptacle 247 inwhich the connector 249 may be releasably secured such that theconnector 249 may be separated from the attachment member 232.

The movable members 246 may be positioned spaced a distance from an edge231 a of the tray 231 to permit the movable members 246 to rotaterelative to the tray 231. In one embodiment, the tray 231 may include acut-out (not shown) at the movable members 246 to facilitate a range ofmovement of the movable members 246 relative to the tray 231. The tray231 may have an axis z extending along its length, an axis y extendingalong its height, and an axis x extending its width. The securementmember 244 may be coaxially aligned with the axis z extending along thelength of the tray 231. A plurality of securement members 244 may bepositioned in a row extending along axis x along the width of the tray231.

As shown in FIGS. 3C-3D, the securement member 244 and a movable member246 of the attachment member 232 may be pivotably connected to oneanother at a pivot point 248 such that the movable member 246 may beradially moved relative to the securement member 244 to define an angleG therebetween. In particular, the movable member 246 may radially pivotbetween the y and z axes and the angle G may be defined therebetween.When secured to the tray 231, the movable member 246 may pivot in acounter-clockwise direction T, but may be inhibited from pivoting in theopposite, clockwise direction by the tray 231. However, as discussedabove, cut-outs in the tray 231 may reduce the interaction between thetray 231 and the movable member 246 to facilitate a greater range ofmovement of the movable member 246 with respect to the tray 231. In anembodiment, the angle G may be adjusted within a range between about 0and about 135 degrees. In another embodiment, the angle G may beadjusted within a range between about 0 and about 90 degrees. Forexample, in one embodiment, the movable members 246 may be movablerelative to one another to transition the patch panel device 210 betweena first condition in which front surfaces 251 of the movable members 246are substantially coplanar, and adjacent ones of the members 246 arespaced apart a first distance or contact each other, and a secondcondition in which the front surfaces 251 of respective adjacent members246 are in different planes in accordance with the angle G that one ofthe adjacent members 246 is pivoted or rotated relative to the otheradjacent members 246, where the other member 246 may or may not be atthe same position as in the first condition.

A plurality of patch panel devices 210 may also be supported withinhousing 2 (see FIGS. 1A-C), and may be translatable into or out from thehousing 2 in a direction along axis z. Once spaced apart from thehousing 2, the movable member 246 may be pivoted with respect to thesecurement member 244, thereby spacing the surfaces 249 a, 249 b of theconnector 249 from any adjacent connector 249 such that the cables C1may be more accessible and readily grasped by a user to detach the cableC1 from the cable adapter or connector 249 of the movable member 246 (asshown in FIG. 3B).

As noted above in connection with FIGS. 1A-C, a number of cables C maybe coupled to ports 7 of a particular patch panel device, with thecables C extending vertically through cable trough 4. A number ofsystems for routing and managing cables C of patch panel systems aredescribed below.

One embodiment of a cable management system 300 is shown in FIGS. 4A-D.Cable management system 300, as well as other embodiments of cablemanagements systems described herein, may be used with any suitablepatch panel device, including suitable devices described herein andsuitable devices described in U.S. Patent Publication Nos. 2014/0355217,2014/0357118, and 2014/0354131, the disclosures of which are herebyincorporated by reference herein. Cable management system 300 isillustrated in FIGS. 4A-D as being used with a patch panel device 310similar to patch panel device 210, with certain differences described ingreater detail below. The cable management system 300 may include one ormore cable guides 400 having a fixed position in relation to housing 2.In the embodiment shown in FIGS. 4A-D, cable management system 300includes cable guides 400 mounted to each side of housing 2, althoughany configuration in which one or more cable guides 400 have a fixedposition relative to housing 2 may be suitable. Cables C may be routedfrom ports 7, through or via cable guide 400, and to cable trough 4 (orany other suitable cable destination) so that as a tray 331 to whichports 7 are attached is pulled out of housing 2, a suitable amount ofslack is maintained in cables C at different positions of tray 331.Prior to describing the function of cable guides 400 in more detail, thestructure of an exemplary cable guide 400 is described in connectionwith FIGS. 5A-D.

FIG. 5A shows an enlarged partial view of a lateral side of cablemanagement system 300. In particular, three trays 331 carrying ports 7within housing 2 are shown adjacent cable guide 400. In the illustratedembodiment, cable guide 400 includes a mounting arm 410 fixedly mountedto housing 2. In addition, the cable guide may include a shelving unithaving a plurality of shelves 420 positioned at a front end portion ofcable guide 400. Shelves 420 may include substantially flat top andbottom surfaces, although other configurations which allow cables C torest upon the shelves 420 may be suitable. In one embodiment, cableguide 400 may include a pair of adjacent shelves 420 for each tray 331connected to cables C, each adjacent pair of shelves 420 being spacedapart by a vertical distance substantially similar to the verticaldistance between adjacent trays 331. Each adjacent pair of shelves 420may be substantially open at a front portion and side portions, andconnected, or otherwise bounded by, a rear or distal surface 422. Eachdistal surface 422 may be rounded, preferably with a convex curvature,so that a cable C extending along the surface 422 has a desired minimumbending radius along the surface.

As shown in FIG. 5B, mounting arm 410 may include a bracket 412 with aplurality of apertures 414 for coupling to a device such as cable trough4, or for mounting to a chassis assembly or other components that may beused in conjunction with cable management system 300. Bracket 412 mayalso include fasteners 416, such as bolts or pins, extending proximallyfrom the bracket 412 to facilitate coupling the shelving unit tomounting arm 410. For example, one or more of surfaces 422 betweenadjacent shelves 420 may include apertures 426, best shown in FIG. 5D,shaped to mate with fasteners 416 so that the shelving unit may bequickly and securely coupled to bracket 412. One or more of the shelves420 may include an aperture 428 (see FIG. 5C) extending therethrough forcoupling accessories, such as hook and loop fasteners, to the shelf 420.Examples of these accessories are described in greater detail below inconnection with FIG. 6B. It should be noted that although mounting arm410 and shelves 420 are illustrated as separate components, thecomponents may be provided as an integral unit. Similarly, althoughthree pairs of adjacent shelves 420 in connection with mounting arm 410,larger or smaller mounting arms may be provided to support a greater orfewer number of pairs of shelves 420. Still further, depending on thenumber of trays 331 in cable management system 300, as many cable guides400 as desired may be stacked vertically to provide suitable guidancefor sets of cables C connected to each tray 331.

Referring back to FIGS. 4A-D, the use of cable guide 400 in combinationwith cable management system 300 is described in greater detail. FIG. 4Aillustrates a top cutaway view of cable management system 300, includinga housing 2 having a first plurality of trays 331 stacked verticallyadjacent a second plurality of trays 331 stacked vertically (only onetray 331 from each group visible in FIG. 4A). The trays 331 are shown inFIG. 4A in an installed or stored position in which the trays 331 arefully or substantially fully positioned within housing 2. The trays 331are slidable with respect to housing 2 so that, when in a pulled outcondition, as shown in the right tray 331 in FIG. 4B, the ports 7 aremore easily accessible to a user. In the embodiment shown in FIGS. 4A-D,the ports 7 are pivotally connected to tray 331 at a rear portion of theport 7 so that the ports 7 may swing side-to-side with respect to oneanother (see FIG. 4C) to create additional space when the tray is in thepulled out position. One set of cables C is connected to front orproximal ends of ports 7 and routed through cable guide 400 into cabletrough 4. Patch panel systems having pivoting ports are described ingreater detail in U.S. Pat. No. 8,939,792, the disclosure of which ishereby incorporated by reference herein.

Each port 7 may include a front cable C coupled to the front end and arear cable C coupled to the rear end. In the embodiment shown in FIGS.4A-D, a front set of cables is coupled to the proximal end of ports 7and passed through cable guide 400 and into cable trough 4. A rear setof cables C is coupled to the distal end of ports 7 and passed into arear portion of housing 2. These rear cables C may be connected toelectronic components in a module in the rear of housing 2, to aconnector in the rear wall of housing 2 that provides a connection toother cables outside the housing, or they may be passed through anopening in the back of housing 2. In other embodiments, the rear cablesC may pass through the front of housing 2, through cable guide 400 andinto cable trough 4 (or other suitable destination), similar to thefront cables C.

Generally, when cables are attached to ports on a sliding tray in apatch panel communication type system, cable management may becomedifficult. For example, for cables coupled to a front of a set of ports,as the tray is moved from the stored position to a pulled out position,slack in the front cables increases from a minimum to a maximum. Whenthe tray is at a position in which the cables have a maximum slack, ifthere is too much slack, the likelihood that the cables get caught on orotherwise interfere with components of the system may be increased.Further, too much slack may make it more difficult to manipulate thecables when the tray is in the pulled out position. Too little slack mayalso complicate the ability to manipulate the cables, for example bylimiting the ability of ports to move away from one another, and mayotherwise increase the risk of detrimental stresses being placed on thecables. As is described in greater detail below, cable management system300, in combination with cable guide 400, may provide cable management,including slack management, in a simple and effective fashion.

As shown in FIGS. 4B-C, ports 7 have a maximum slidable distance in theZ direction of D1, representing the distance between the storedposition, represented by the left tray 331 in FIG. 4B, and the pulledout position, represented by the right tray 331 in FIG. 4B. The shelves420 of cable guide 400 are positioned lateral to the lateral-most port7. In addition, shelves 420 may be positioned a distance D2 in the Zdirection from the proximal end of ports 7 when tray 331 is in thestored position, and a distance D3 in the Z direction from the proximalend of ports 7 when tray 331 is in the pulled out position. In theillustrated system 300, the distance D2 is greater than the distance D3,with the sum of distances D2 and D3 being equal to the distance D1. Withthis configuration, front cables C may be managed in the system 300where the front cables C are connected at one end C1 to a front of theports 7, and each of the front cables is supported by the cable guide atthe shelves 420 at a portion of the front cable a predetermined lengthof the front cable from the one end C1. In such cable connectionarrangement, the slack in front cables C increases as tray 331 is pulledout until the tray 331 travels the distance D2, where the proximal endsof ports 7 are transversely aligned with shelves 420. At this point, theslack in the cables is at a maximum, as the cables remain supported atthe cable guide at the portions that are respectively predeterminedlengths from the ends C1. As a user continues to pull tray 331 furtherproximally to the completely retracted position represented by the righttray 331 in FIG. 4B, the slack begins to decrease as the cables becometauter, the cables again remain supported at the cable guide at theportions that are respectively predetermined lengths from the ends C1.It should be understood that in other examples, the cable guide 400 maybe positioned a different distance in the Z direction. For example, theshelves 420 of the cable guide 400 may be positioned proximal to thefront face of ports 7 when the tray 331 is in the stored position aswell as in the pulled out position.

In the configuration illustrated in FIGS. 4A-D, there is more slack infront cables C when the tray 331 is in the pulled out position than whenthe tray 331 is in the stored position. When tray 331 is in the storedposition, front cables C are generally not manipulated since the ports 7are within, or flush with the front of, housing 2. Because the frontcables C are generally not manipulated when the tray 331 is in thestored position, the front cables C can be relatively taut to helpmaintain the cables C in an organized fashion. On the other hand, if auser intends to manipulate front cables C, he or she may generallytransition tray 331 into the pulled out position. Further, when in thepulled out position, the ports 7 are capable of moving laterally apart(or vertically apart in a system similar to the patch panel device 210of FIG. 3A) with respect to one another to provide the user betteraccess to the ports 7, as shown in FIG. 4C. For these reasons, it isdesirable for at least some slack to remain in the front cables C whenthe tray 331 is in the pulled out condition. However, the slack isdesirably the minimum amount to allow for the motion of ports 7 andmanipulation of front cables C. Thus, it is desirable that the slack inthe front cables C is not at a maximum when in the tray 331 is in thepulled out position. It is noted that in the pulled out position of thetray, when one of the ports 7 is manipulated from a normal position suchas shown on the left tray of FIG. 4B, the one front cable C connectedthereto may move such that the portion of the one front cable C is notpositioned at, and therefore not supported by, the cable guide. However,when the port 7 is returned to a normal position, the portion of the onefront cable C connected thereto may return to a state at which theportion of the one front cable C is positioned at, and supported by, thecable guide. Each of the conditions described above is met with thecable management system 300 and cable guides 400 illustrated in FIGS.4A-C. It should further be understood that effective cable managementmay still be provided when the cable guide 400 is positioneddifferently. For example, even if the shelves 420 of cable guide 400 arepositioned proximal to the front face of ports 7 in all positions oftray 331, slack management and cable organization may be provided in aneffective and relatively simple fashion. With that configuration, cablesC may have maximum slack when tray 331 is in the pulled out position,which maximum slack is desirably enough to manipulate cables C at ports7, with the slack reducing as tray 331 is pushed into the storedposition. The configuration described in connection with FIGS. 4A-D mayalso help limit or eliminate movement of the cables C within the cabletrough 4, and also between cable guide 400 and the cable trough 4,during movement of the tray 331.

In order to achieve the benefits described above, it is desirable thatcables C passing over a surface of a shelf 420 of cable guide 400 remainpositioned on or at the shelf 420 and/or within the boundaries ofadjacent shelves 420, when the position of the tray is switched amongthe completely retracted, pulled out and stored positions and there isno user manipulation of the ports or the front cables. One way to helpachieve this result is by adding one or more features to cable guide 400to provide vertical limits on the movement of cables C and/orconstraints on the ability of the cables C to otherwise move. Thefeatures described below may also help to further limit or eliminatemovement of the cables C within the cable guide 400, as well as to limitor eliminate movement of the cables C in the cable trough 4 or atpositions between the cable guide 400 and the cable trough 4.

One structure that may aid in maintaining the cables C within adjacentshelves are the fins 430 illustrated in FIG. 6A. In the illustratedembodiment, one or more fins 430 are positioned on a free end of eachshelf 420. In particular, a first shelf 420 may include a fin 430 on afree end extending substantially perpendicular to the surface of thefirst shelf toward a second adjacent shelf. Similarly, the secondadjacent shelf 420 may include a fin 430 on a free end extendingsubstantially perpendicular to the surface of the second shelf towardthe first shelf. In this embodiment, fins 430 are substantially rigid,although using deflectable fins may be suitable, as described in greaterdetail below. The fins 430 may not extend completely toward the adjacentshelf 420, and the fins that extend toward one another are offset sothat an opening 432 is defined between the fins 430. With thisconfiguration, cables C may be relatively easily inserted into, orremoved through, the space between adjacent shelves 420 through theopening 432 if a user desires to install or remove a cable C from thesystem. However, the opening 432 is preferably small enough and orientedwith respect to cables C so that, during normal operation of the cablemanagement system 300, the cables C are unlikely to pass through opening432 unintentionally.

Although two fins 430 are shown in each space between adjacent shelves420, other configurations may be suitable. For example, a single fin mayextend nearly all the way to the adjacent shelf 420, with a smallopening or slot being defined between the end of the fin and theadjacent shelf 420. Still further, a single fin 430 could extend totouch the adjacent shelf 420 with the fin being deflectable so that auser could push a cable C toward the fin, causing the fin to deflectinward until the cable C passes into the space between adjacent shelves420. Once the cable C is positioned between the adjacent shelves 420,the fin would return to its original position extending from a firstshelf and touching the adjacent shelf, isolating the cable C between theadjacent shelves 420. The deflectable fin may have enough stiffness suchthat cables C would be unlikely to apply enough force to the fin duringnormal operation of the cable management system 300 to cause significantdeflection of the fin. Still other variations may be suitable, such astwo fins 430 extending toward one another from adjacent shelves 420 sothat the fins touch, but the fins being deflectable so that a cable Cmay be pushed toward the fins causing them to deflect to allow the cableC to pass beyond the fins.

FIG. 6B shows a cross-section of the shelves 420 of the shelving unit ofcable guide 400 with additional components to help secure cables Cbetween adjacent shelves 420. Shelves 420 may be the same as thosedescribed above, with or without fins 430. A fastening device, such as ahook and loop strap 434, may be provided for each shelf 420 that is tosupport cables C. Hook and loop strap 434 may be, for example, a deviceprovided under the trade name VELCRO, but other type of fastening strapsmay be suitable, for example straps having snap closures, hook closures,adhesive closures, etc. A first free end of fastener 434 may include anaperture that may align with aperture 428 in a shelf 420, with afastener such as a rivet or bolt 436 coupling the first free end offastener 434 to shelf 420. Cables C may be inserted between adjacentshelves 420, with free ends of fastener 434 wrapping around the cablesC. With the cables C in a desired position, the second free end offastener 434 may be coupled to the first free end, for example via ahook and loop mating system. With this configuration, rivet or bolt 436keeps the fastener 434 in a desired position, with the fastener 434keeping cables C secure between adjacent shelves 420. It should be notedthat, in FIG. 6B, two groups of cables C are shown, each group of cablesC positioned within a sleeve to help further organize the cables. Twogroups of cables C may pass through a single pair of adjacent shelveswhen, for example, the sets of front cables C and rear cables C both arerouted through the front of the housing 2.

FIGS. 6C-D show views of a modified cable guide 400′ that is identicalto cable guide 400 with the exception of the features noted below. Cableguide 400′ may include an identical mounting arm 410 for mounting tohousing 2. In addition, cable guide 400′ may include a shelving unithaving a plurality of shelves 420′ arranged in a stack configuration.Shelves 420′ may include substantially flat top and bottom surfaces of agenerally similar shape to shelves 420, and be connected by roundedsurface 422. However, unlike shelves 420, a recess 421′ may be formed inthe proximal end of each shelf 420. In the illustrated embodiment, eachrecess 421′ is generally “U”-shaped, although other shapes includingrectangular may be suitable. For each unit of shelves 420′, shelf 420 e′at one end of the stack may include an aperture 428. The aperture 428may be configured to receive a bolt or other device to couple a firstelement of a fastening device to the shelf 420 e′, and a second elementof a fastening device may be coupled to the top surface of 420 f, whichis at the other end of the stack. With this configuration, as explainedin greater detail below in connection with FIG. 6E, a single fasteningdevice may be used to secure cables C between each pair of shelves 420′in the unit, rather than having a separate fastener dedicated to eachpair of adjacent shelves 420′.

FIG. 6E shows a cross-section of the unit of shelves 420′. In theillustrated embodiment, the first element of the fastening device maytake the form of a first strap 434 a′ that is bolted or otherwise fixedto a top surface of the shelf 420 f. An end portion of the first strap434 a′ may include a closure mechanism, such as hooks or loops of thetype provided under the trade name VELCRO. The first strap 434 a′ may belong enough to extend at least a length of the shelving unit from theshelf 420 e′ to the shelf 420 f, preferably may be positioned in thespace formed by the recess 421′ in each shelf 420, and desirably hasenough additional length so that the closure mechanism may extend atleast some distance over the top surface of the shelf 420 e′. The secondelement of the fastening device may take the form of a second strap 434b′. In the illustrated example, the second strap 434 b′ may have arelatively short length and may be fixed to the top surface of the shelf420 e′ so that the second strap 434 b′ does not have any significantfreedom of movement. The second strap 434 b′ may include a closuremechanism that corresponds to the closure mechanism at the end of thefirst strap 434 a, which may be hooks (if first strap 434 a′ includesloops) or loops (if first strap 434 a′ includes hooks). It should beunderstood that the corresponding closure mechanisms of the first strap434 a′ and the second strap 434 b′ may take other forms, such as snaps,hooks, adhesives, buckles, etc. With the above-described configuration,a user is able to secure all of the cables C housed within a shelvingunit with a single motion. In other words, with the cables C positionedbetween the desired pairs of adjacent shelves 420′, the user may graspthe first strap 434 a′ and couple the closure mechanism at the end ofthe first strap 434 a′ to the second strap, making sure to guide theintermediate portion of the first strap 434 a′ into the recess 421′ ofeach shelf 420′. It should be noted that the number of shelves 420′within a given shelving unit may be altered as desired, with the lengthof the first strap 434 a′ depending mainly on the total end to endlength of the shelving unit. It should further be understood that one ofthe end shelves in the shelving unit does not necessarily need toinclude a recess 421′, and may rather take a shape similar to othershelves 420′ in the shelving unit without such a recess. In addition toproviding a simple and fast mechanism for securing cables C within theshelving unit, the configuration described in connection with FIGS. 6C-Emay maximize the amount of space available for cables C between eachpair of shelves 420 a′. One additional benefit of this configuration isthat, if cables C are positioned anywhere along the length of the recess421′, first strap 434 a′ may be able to make contact with those cables Cto secure those cables C in place. So, even if a volume of cables C ispositioned so that the cables C extend to a portion of recess 421′,additional cables C may be added within the space between the twoadjacent shelves 420′ with the first strap 434 a′ being able to securethe cables C between the shelves 420′.

FIG. 7 illustrates additional features which may help organize cables Cof cable management system 300. In FIG. 7, one tray 331 on the rightside is shown in the pulled out position, with one set of front cables Cpassing through cable guide 400, and a set of rear cables C passingrearward into the housing 2. Generally, it is desirable for the frontcables C to pass laterally along a path prior to passing through thecable guide 400. In order to facilitate such routing, a handle member350 may be provided on tray 331, the handle member extending proximallyof the housing 2. The handle member 350 may take any suitable form thatacts as a guide for cables C. For example, as illustrated, handle member350 may include a substantially flat bottom surface which curves upwardat the front end to provide surfaces against which cables C may bepositioned. Additional surfaces may be provided on handle member 350,and desirably the surfaces include at least a bottom surface and frontsurface. Handle member 350 may provide the additional function ofproviding a user a convenient gripping member for pulling tray 331 outof the housing 2 or pushing tray 331 back into the housing. A lateralguide member 360 may also be provided at a lateral-most end of tray 331to provide additional guidance to the cables C as they extend laterallyaway from tray 331. As illustrated, lateral guide member 360 has aconvex cable contacting surface, although other shaped surfaces may besuitable. Additional guide members, such as rear guide member 370, maybe provided on tray 331 to facilitate maintaining the rear cables in adesired position. The handle member 350 and/or guide members 360, 370may also provide locking functionality. For example, when tray 331 is inthe stored position, it may be desirable to maintain the tray 331 in alocked or semi-locked state so that intentional pulling force must beapplied to tray 331 in order to begin transitioning the tray 331 intothe pulled out position. This locking functionality may be provided, forexample, by including detents or other cooperating structures in thehousing 2 or adjacent trays 331 so that, when the tray 331 is in thestored position, one or more of the handle member 350 and guide members360, 370, have a friction fit with the corresponding structure.

The patch panel devices 310 described above may take the form of slidingtrays 331 mounted within, and slidable with respect to, a housing 2 orchassis. In other embodiments, substantially self-contained cassettesmay be utilized, the cassettes being capable of being swapped into orout of a chassis, with the cassettes providing the sliding functionentirely. For example, a cassette 500 is shown in an exploded view inFIG. 8A. The cassette 500 generally includes a cassette housing 510,which may be a substantially rectangular box with an open front, and acassette head portion 520 slidable into and out of the housing 510. Thesides of cassette housing 510 may include rail slots 512 to facilitatesliding of the cassette head 520, as described in greater detail below.

A front of cassette head 520 includes a plurality of ports 7 arranged ina similar or identical fashion as described in relation to patch panel310, for example with laterally pivotable ports 7. Extending from eachside of the rear of cassette head is a rail 530 for sliding into or outof the rail slots 512 of cassette housing 510. FIG. 8B illustratescassette 500 with cassette head 520 in the pulled out position in whichports 7 may be easily accessed and may move in relation to one anotherin the same fashion as described above in connection with patch panel310. FIG. 8C illustrates cassette 500 with cassette head 520 in thestored condition, the cassette head 520 being completely orsubstantially completely contained within cassette housing 510.

FIG. 8D shows a cross section of one side of cassette housing 510 withrails 530 of cassette head 520 positioned therein, to illustrate themechanism that provides sliding motion between cassette housing 510 andcassette head 520. In particular, a portion of top housing 510 a, bottomhousing 510 b, and a sidewall 510 c of housing 510 are shown in FIG. 8D.An extension 511 extends from top housing 510 a toward bottom housing510 b, although not the entire distance therebetween. The extension 511,sidewall 510 c, and portions of top housing 510 a and bottom housing 510b define rail slot 512, in which a rail 530 of cassette housing issecured. As cassette head 520 is pulled out of or pushed into cassettehousing 510, the interaction of the rails 530 in rail slots 512 helpkeep the cassette head 520 in a desired orientation and facilitate thesliding motion. Stops may be included, if desired, so that rails 530 areunable to unintentionally completely exit cassette housing 510, so thata user does not unintentionally decouple the cassette head 520 from thecassette housing 510 as it is transitioned to the pulled out position.Although on example of rails 530 and rail slots 512 are illustrated inFIG. 8D, other similar structures of rails and rail slots may be used toachieve the same result. As shown in FIG. 8E, an insert 513 may bepositioned within rail slot 512. The insert 513 may be any desirablematerial and extend along substantially the entire length of the railslot. The insert 513 may have a first stop to prevent the insert 513from sliding out of the rail slot 512, and a second stop so that therail 530 of the cassette head 520 is stopped from sliding out of theinsert. With this configuration, the insert 513 may extend the lengthwhich cassette head 520 may slide with respect to cassette housing 510.In addition, the material and dimensions of insert 513 may be chosen toprovide for smoother sliding between cassette head 520 and cassettehousing 510. For example, if rail 530 and rail slot 512 are both metal,a plastic insert 513 may provide for smoother sliding. To provide forextending the length which cassette head 520 may slide with respect tocassette housing 510, it may be preferable for insert 513 to be formedof a hard metal.

Cassette 500 may be modular in the sense that it may be inserted into achassis and, if for example a cassette is damaged, it may be easilyremoved from the housing and replaced with another. For example, FIG. 9Ashows a chassis 600 that may be used to hold a plurality of cassettes500. In the illustrated embodiment, chassis 600 includes two verticalchannels for accepting cassettes 500, each channel having a plurality ofsupports 610 to support cassettes 500. FIG. 9B shows chassis 600 withthree cassettes 500 installed and one cassette 500 in the process ofbeing installed. Any of the cable guides 400 described above, ormodifications thereof, may provide cable slack management functionalityfor the cassette version of the system as the patch panel versionsdescribed above. For example, one or more mounting arms 410 of cableguides 400 may be coupled to the chassis 600 so that cables connected toports in a cassette 500 may be managed as the cassette head 520 slidesrelative to the cassette housing 510. In addition, because the cassettehousing 510 is stationary with respect to the chassis 600, the mountingarm 410 of a cable guide 400 may be coupled directly to the cassettehousing 510. Since the cassette housing 510 remains stationary withrespect to the cassette head 520, as the cassette head 520 slides intoor out of the cassette housing 510, the cable guide 400 remainsstationary despite being fixed to the cassette housing.

FIG. 10A shows a perspective view of a patch panel system 1000 accordingto another embodiment of the disclosure. Patch panel system 1000 mayinclude an outer housing 1002 with side walls, top and bottom walls, adistal or rear wall, and an open front or proximal face. However, aproximal cover, such as a door or other cover that allows access insidethe outer housing 1002, may be used in conjunction with the outerhousing although such a cover is not shown in the figures. FIG. 10Bshows a top view of patch panel system 1000 with the top wall of outerhousing 1002 omitted for clarity of illustration. An inner housing 1003may be positioned within outer housing 1002, preferably completelywithin the boundaries of the outer housing 1002. The inner housing 1003may include side walls, and top, bottom and rear walls that may beintegral with corresponding walls of the outer housing 1002, or whichmay be separate and distinct from the walls of the outer housing. Innerhousing 1003 may include a plurality of slots stacked in a verticalarrangement, similar to the supports 610 of the chassis 600 of FIG. 9A.Each slot is adapted to hold a tray or cassette 1010 in slidingengagement with the slot, although in practice every slot may notnecessarily have a cassette 1010 received therein. Each cassette 1010may be generally similar to patch panel devices 110, 210, 310 and/orcassettes 500 described above, the cassettes 1010 including ports orother connectors to connect to cables. Each cassette 1010 may include ahandle 1012 extending from a proximal end to provide a grip for a userto pull the cassette 1010 out of the inner housing 1003, for exampleinto the position shown in FIGS. 10G-H, for easy access to thecassette(s) 1010 of interest. Outer housing 1002 may include one or moreaccess ports 1004 to allow for cables or other items to pass between theinside and the outside of the outer housing. As shown in FIG. 10A,access ports 1004 may take the form of cylindrical members that may beintegral with the bottom wall of outer housing 1002, although anyopening that allows cables to pass from outside to inside the outerhousing 1002 (or vice versa), may be suitable.

In one example, patch panel system 1000 may be used to patch connectionsfrom a vendor, such as a cable provider, to a customer, such as anapartment complex or individual units thereof. The outer housing 1002may be particularly suited to be used outside, with the outer housing1002 providing protection from the elements to the components within theouter housing 1002, including the inner housing 1003. For such a use,cables from the vendor may enter through access ports 1004 on one sideof outer housing 1002, for example the right side, and connect to portsin the rear of one or more cassettes 1010. Other cables may extend fromthe rear of one or more cassettes 1010, through corresponding accessports 1004 for example on the left side of the outer housing 1002, toindividual units within the apartment complex to provide connectionbetween the individual customer and the vendor. Patch panel system 1000may provide a convenient system for operating and maintaining theconnections between the vendor and the individual customers, forexample, with one or more cables C2 extending from and connecting afront or proximal side of one cassette 1010 in inner housing 1003 to thefront of another cassette in the inner housing.

Although FIGS. 10A-H show a single cable C2 connected between the frontends of two cassettes 1010, in practice many cables C2 could beconnected between the fronts of pairs of cassettes 1010. In such asituation, management of these cables C2 may become difficult,particularly when a user needs to access a particular cable or cablesC2. To assist in the management of cables connected to patch panelsystem 1000, the patch panel system 1000 may include a pivotable hangerplate assembly 1020. Hanger plate assembly 1020 may include a hangerplate 1021 which may, for example, be a rigid rectangular plate coupledto a side wall of inner housing by one or more hinges 1022. Hanger plate1021 preferably has a height that is less than the distance between thebottom and top walls of the outer housing 1002, and a width that issmaller than the distance between the side walls of the outer and innerhousing between which the hanger plate 1021 is positioned. With thisconfiguration, hanger plate 1021 may swing with a range of motion abouthinge(s) 1022 from being positioned inside the outer housing 1002 asshown in FIGS. 10A-B, through a transition position shown in FIGS.10E-F, to a position outside the outer housing 1002 as shown in FIGS.10G-H.

Enlarged top and isolated perspective views of the hanger plate assembly1020 are shown in FIGS. 10C-D. A plurality of hangers 1023 may becoupled to proximal face of hanger plate 1021. Each hanger 1023 mayinclude a substantially flat surface on which a cable C2 may rest. Aguide surface 1024 may be positioned on one end of the hanger 1023.Guide surface 1024 is illustrated as having a circular cross-section.Although guide surface 1024 does not need to have a circularcross-section, it preferably includes a curvature that provides aminimum bending radius which restricts cable C2 from bending so muchthat cable C2 becomes damaged. As best seen in FIG. 10G, guide surface1024 may be a formed by a single cylindrical member extendingsubstantially the entire height of the hanger plate 1021. However, itshould be understood that a separate guide surface 1024 may be providedfor each individual hanger 1023 if desired.

Each hanger 1023 may also be associated with one or more retainingmembers to help keep cable C2 positioned within hanger 1023. Forexample, each hanger 1023 may include an upwardly extending retainingmember 1025 extending upwardly from the flat surface of the hanger 1023.As best seen in FIG. 10D, upwardly extending retaining member 1025 maybe substantially cylindrical and extend upwards toward a verticallyadjacent hanger 1023, without contacting the vertically adjacent hanger1023. Similarly, each hanger 1023 may also include a downwardlyextending retaining member 1026 extending downwardly from the flatsurface of the hanger 1023. As best seen in FIG. 10D, downwardlyextending retaining member 1026 may be substantially cylindrical andextend downwards toward a vertically adjacent hanger 1023, withoutcontacting the vertically adjacent hanger 1023. With this configuration,the space between two vertically adjacent hangers 1023 includes tworetaining members 1025, 1026 that may keep a cable C2 fromunintentionally exiting the space between the two vertically adjacenthangers 1023. However, like the fins 430 described in connection withFIG. 6A, space is provided between the ends of the retaining members1025, 1026 and the flat surfaces of the hangers 1023 so that a user mayremove (or insert) cable C2 from the space between vertically adjacenthangers 1023 by manually removing (or inserting) the cable C2 throughthe space between the retaining members 1025, 1026 and the surfaces ofthe hangers 1023. It should be understood that in a set of verticallystacked hangers 1023, the bottom-most hanger 1023 need not include adownwardly extending retaining member, and the top-most hanger 1023 neednot include an upwardly extending retaining member.

Hanger plate assembly 1020 may also include a rear hanger 1027 coupledto and extending from the rear of hanger plate 1021, extending in anopposite direction than hangers 1023. Preferably, only a single rearhanger 1027 is coupled to the rear of hanger plate 1021 at a top of thehanger near the top surface of the outer housing 1002. However, morerear hangers 1027 may be included if desired, including for example asecond rear hanger 1027 at the bottom of hanger plate 1021, or in anyother number and position as desired. Rear hanger 1027 may include aflat bottom surface between two upwardly extending surfaces that createa generally “U”-shaped channel. Cables that connect to the rear of thecassettes 1010 and exit through an access port 1004 may be bundledtogether and be partially routed along the “U”-shaped channel of rearhanger 1027 to help maintain those cables in an organized condition,reducing the likelihood those cables will interfere with cables C2 inthe front portion of outer housing 1002 or with the swinging movement ofhanger plate assembly 1020. It should be understood that cables enteringthe outer housing 1002 through an access port 1004 and coupled to therear of one or more cassettes 1010 may also be routed along the“U”-shaped channel of rear hanger 1027 for similar reasons. One or moreapertures (not illustrated) may be provided in the hanger plate 1021between the rear hanger 1027 and a hinge 1022 so that a bundle of cablespositioned within the rear hanger 1027 may pass through the hanger plate1021 and enter the inner housing 1003 so they may connect tocorresponding ports, such as those in the rear of particular cassettes1010. In some embodiments, the rear of the cassettes 1010 may beaccessible by an opening, provided by a door or other mechanism, so thatcables entering through access ports 1004 may connect directly to therear of cassettes 1010 where desired, without passing those cablesthrough hanger plate 1021.

Operation of the patch panel system 1000 with respect to theorganization of cables is described briefly. In a stored state, cablesentering or exit outer housing 1002 through access ports 1004 on theleft side of the outer housing and connecting to the rear of cassettemay be secured within the “U”-shaped channel of rear hanger 1027. CablesC2 extending from the front of cassettes 1010 to the front of othercassettes 1010 may each extend through a first hanger 1023 positionedadjacent the corresponding cassette 1010, guided along guide surface1024 to maintain a minimum bend, resting on the flat surface of hanger1023, and being maintained between vertically adjacent hangers 1023 byretaining members 1025, 1026. The particular cable C2 may exit the spacebetween vertically adjacent hangers 1023 between the retaining members1025, 1026 and the hanger plate 1021. After exiting, the cable C2 mayextend up or down generally along the hanger plate 1021, and enter thespace between a different pair of vertically adjacent hangers 1023,where the cable C2 may then couple to the front of a separate cassette1010. In the stored position, as shown in FIGS. 10A-B, the hangerassembly 1020 may be rotated about hinge 1022 so that the hanger plate1021 extends toward the rear wall of outer housing 1002. In thisposition, the cables C2 may have little to no slack. If a user desiresto access one or more cassettes 1010 and cables C2 to, for example,perform maintenance, the user can open a door on the front of outerhousing 1002, if such a door is included. Before pulling out a cassette1010, the slack in cables C2 may be increased. The user may begin toincrease the slack in cables C2 by grasping a portion of the hangerplate assembly 1020, for example the hanger plate 1021 or any of thehangers 1023, and beginning to pull the hanger assembly proximally asshown in FIGS. 10E-F. As the hanger plate assembly 1020 continues torotate about hinge 1022, the hanger plate 1021 and the associatedhangers 1023 continue to rotate until the hanger plate 1021 exits thefront of outer housing 1002, as seen in FIGS. 10G-H. With the hangerplate assembly 1020 rotated at least partially out of outer housing1002, the slack in cables C2 is further increased. The user may thenpull one or more cassettes 1010 proximally out of the outer housing1002, which may be facilitated by use of handle(s) 1012. As the cassette1010 is pulled out, slack in the cables C2 may begin to increase as theproximal face of the cassette 1010 is aligned with the retainer members1025, 1026. As the cassette 1010 is pulled out further to a proximaldistance from the housing 1002 greater than the retainer members 1025,1026, the slack in the cables C2 may begin to decrease again.Preferably, when the cassette 1010 is pulled out to the maximum extent,enough slack remains so that a user can easily manipulate the cables C2at the corresponding ports, but not there is not so much slack that thecables C2 are difficult to manage. As shown in FIGS. 10G-H, the cablesC2 and cassettes 1010 are easily accessible with both cables C2, and thecables resting on rear hanger 1027, maintained in an organized state. Itshould be understood that the patch panel system 1000 is not shown toscale in FIGS. 10A-H.

Referring now to FIGS. 10I-J, the positions of retaining members 1025,1026 and guide surface 1024 may be selected in order to attain a desiredslack management of cables C2 at all positions of hanger plate assembly1020 and cassettes 1010. For example, referring to FIG. 10I, theretaining members 1025, 1026 may be positioned a distance D4 from theproximal face of inner housing 1003 when the hanger plate assembly 1020is rotated out of the outer housing 1002. As the user pulls out cassette1010, slack in the cables C2 may initially increase compared to thatshown in FIG. 10I. Once the proximal face of cassette 1010 moves in theproximal direction past the position of the retaining members 1025,1026, slack may begin to decrease again. As shown in FIG. 10J, theproximal face of each cassette 1010 has a maximum distance D5 from theproximal face of inner housing 1003 when the cassette 1010 is in thefully pulled out position. Preferably, the distance D5 is about twicethe distance D4. With this configuration, when the hanger plate assembly1020 is rotated out of the outer housing 1002 as shown in FIGS. 10I-J,cables C2 may have about the same slack when the cassette 1010 is in thestored position shown in FIG. 10I and when the cassette 1010 is in thepulled out position shown in FIG. 10J. However, in other embodiments,distance D5 may be less than twice D4, so that there is a net increasein the slack of cables C2 when the cassette 1010 is transitioned fromthe stored condition to the pulled out condition. Such an increase inslack may make it easier for a user to manipulate the connection ofcables C2 with corresponding ports in cassette 1010. This feature issimilar to the related feature described above in connection with FIG.4B.

Although patch panel system 1000 is shown with a single hanger plateassembly 1020, it should be understood that patch panel system 1000 mayinclude a second hanger plate assembly on the opposite side of innerhousing 1003 of the first hanger plate assembly 1020. If a second hangerplate assembly is used, it may be identical to the first hanger plateassembly 1020 in structure and function, albeit the components would bein a mirrored position compared to the first hanger plate assembly 1020.Also, although the hanger plate assembly 1020 is shown with one hanger1023 for each cassette 1010, more or fewer individual hangers 1023 maybe provided. Still further, although hanger plate 1021 is shown as asingle rigid member so that all of the hangers 1023 attached to thehanger plate 1021 move in unison, in other embodiments a plurality ofindividually rotatable hanger plates may be provided. For example, ahanger plate may be provided in two portions, so that a top group ofhangers is separately rotatable with respect to a bottom group ofhangers. Still further, any number of hanger plates, up to the totalnumber of hangers so that each hanger may be individually rotatable, maybe used. However, a single hanger plate 1021 may be preferable for easeof use.

As noted above, patch panel system 1000 may be suited for outdoor use.When being used outdoors, it may be important that when the patch panelsystem 1000 is not being actively used or maintained, the components areall capable of being situated within the bounds of the outer housing1002, so that the components are protected from the elements. Thus, asnoted above, the width of the hanger plate 1021 should be less than thedistance between a side wall of the inner housing 1003 and thecorresponding side wall of the outer housing 1002, so that it may swingfrom outside the outer housing 1002 to inside the outer housing 1002where it is protected from the elements. However, it may be beneficialto provide a hanger plate that is wider than hanger plate 1021, so thatcables C2 may be guided with fewer sharp turns, such as where a cableexits one hanger 1023 and moves down or up the hanger plate 1021 towardsanother hanger 1023. This may beneficial because certain cables usedwith patch panel system 1000 may be quite stiff, making tight turnsdifficult to maintain.

The patch panel system 1000′ shown in FIGS. 11A-H addresses thepotential limitations described immediately above. Patch panel system1000′ may be identical to patch panel system 1000 in most or allrespects other than the hanger plate assembly 1020′. For example, patchpanel system 1000′ may include outer housing 1002, inner housing 1003,access ports 1004, and cassettes 1010 identical to those described inconnection with FIGS. 10A-H. As such, these components will not bedescribed in detail again.

Similar to the hanger plate assembly 1020 of patch panel system 1000,the hanger plate assembly 1020′ of patch panel system 1000′ has a storedcondition, shown in FIGS. 11A-B, a pulled out condition for access asshown in FIGS. 11G-H, with an intermediate position shown in FIGS.11E-F. A top view of the hanger plate assembly 1020′ in the storedcondition is shown in FIG. 11C, with inner and outer housings 1002, 1003omitted for clarity of illustration. Similar to hanger plater assembly1020, hanger plate assembly 1020′ may include a substantially rigidrectangular first hanger plate 1021 a′ coupled to inner housing 1003 byone or more hinges 1022. A plurality of hangers 1023, identical to thosedescribed above, may be coupled to the first hanger plate 1021 a′ in avertically stacked configuration. First hanger plate 1021 a′ may includeone or more rear hanger plates 1027 similar or identical to thosedescribed above.

First hanger plate 1021 a′ may have a height similar to the height ofhanger plate 1021, but may be narrower. In addition to first hangerplate 1021 a′, hanger plate assembly 1020′ may include a plurality ofadditional hanger plates hingedly coupled to one another and to firsthanger plate 1021 a′. In the particular embodiment of hanger plateassembly 1020′ shown, five additional hanger plates 1021 b′-1021 f arehingedly coupled to one another in series, with hanger plate 1021 b′hingedly coupled to first hanger plate 1021 a′. Each hanger plate 1021a′-1021 f may have a substantially similar height, and the widths of theplates may be similar or different from one another. Although hangerplates 1021 a′-f are shown as separate members that are coupled to oneanother by hinges, one or more of the hanger plates 1021 a′-‘f’ may beintegrally formed with a living hinge between adjacent plates to providesimilar functionality.

Hanger plate assembly 1020′ is shown in FIG. 11D in an extended orpulled out condition with outer housing 1002 and inner housing 1003omitted for clarity of illustration. Select ones of the hanger plates1021 a′-1021 f′ may include cable retainers 1030′. Each cable retainer1030′ may include two extensions, such as a top extension 1031′ and abottom extension 1032′. Top extension 1031′ may include a first portionextending away from and substantially orthogonally to the correspondinghanger plate, and a second “L”-shaped portion extending down from andorthogonal to the first portion and parallel to the corresponding hangerplate. The bottom extension 1032′ may include a first portion extendingaway from and substantially orthogonally to the corresponding hangerplate, and a second “L”-shaped portion extending up from and orthogonalto the first portion and parallel to the corresponding hanger plate.With this configuration, each extension may form a generally “U”-shapedchannel. The two “L”-shaped portions of the top extension 1031′ and thebottom extension 1032′ may be positioned with respect to one another sothat they form a rectangular shape with a gap between the “L”-shapedportions adapted to receive cable C2 therethrough and into one or bothof the “U”-shaped channels. As shown in FIG. 11D, two cable retainers1030′ may be positioned toward the top of an intermediate hanger plate1021 d′ and an end hanger plate 1021 f′, with two cable retainers 1030′positioned toward the bottom of hanger plates 1021 d′ and 1021 f′. Itshould be understood that more or fewer cable retainers 1030′ than shownmay be used with hanger plate assembly 1020′.

Cables C2 coupled to the front of a cassette 1010 may first pass througha corresponding hanger 1023 in the same fashion as described inconnection with FIGS. 10A-H. Cables C2 may then extend along thesequence of hanger plates and into one or both of the “U”-shapedchannels formed by a cable retainer 1030′ on one of the intermediatehanger plates, such as hanger plate 1021 d′. The cables C2 may continueto extend to the cable retainer 1030′ on the end hanger plate 1021 f, atwhich point the cables C2 may extend up or down to the cable retainers1030′ on the opposite end of the hanger plates. The end hanger plate1021 f may include an end portion 1040′ that forms a “U”-shape channelalong substantially the entire height of the hanger plate 1021 f. Endportion 1040′ may receive cables C2 that pass from the top cableretainer 1030′ on hanger plate 1021 f and to the bottom cable retainer1030′ on hanger plate 1021 f. End portion 1040′ may ensure that cablesC2 stay in place as they switch directions and provide additionalprotection. End portion 1040′ may also be used as a handle for a user tograsp to pull the hanger plate assembly 1020′ out of outer housing 1002.

In the completely stored position, as shown in FIGS. 11A-B, the hangerplates 1021 a′-1021 f′ may collapse with respect to one another to forma “U”-shape that fits completely within outer housing 1002 between oneside wall of inner housing 1003 and the corresponding side wall of outerhousing 1002. If a user needs to access cassettes 1010 and cables C2 formaintenance, the user may pull hanger plate assembly 1020′ out of outerhousing 1002. As the user pulls hanger plate assembly 1020′ proximally,the hinges between adjacent hanger plates 1021 a′-1021 f′ allow thehanger plate assembly 1020′ to begin to straighten and extend out of theouter housing 1002. As the user continues to pull hanger plate assembly1020, it transitions into a fully extended configuration as shown inFIGS. 11G-H, where all of the hanger plates 1021 a′-1021 f′ aresubstantially straight with respect to one another. In thisconfiguration, the user may then pull out one or more cassettes 1010 asdesired to perform maintenance on cables C2 as desired. The position ofthe retaining members 1025, 1026 and the guide surface 1024 with respectto the maximum distance that the cassettes 1010 may slide may be basedon the same or similar considerations as described above in connectionwith FIGS. 10I-J.

Compared to hanger plate assembly 1020, hanger plate assembly 1020′ mayprovide an increased effective length along which cable C2 may extend,despite the same amount of space being available between the walls ofinner housing 1003 and outer housing 1002. As noted above, if cables C2are stiff, the additional length provided by hanger plate assembly 1020′may make the cables C2 more easily and safely stored and maintained.Although cable retainers 1030′ are shown as having particular structure,number, and relative positioning, it should be understood that otherforms of cable retainers may be suitable. For example, any structurethat provides support for the cables C2 as they run along the hangerplates 1021 a′-1021 f′, particularly those that allow for the cables C2to be inserted into or removed from the retainers with intentionaleffort, but to keep the cables from exiting unintentionally, may besuitable alternates to the disclosed embodiment.

Although patch panel system 1000′ is shown with a single hanger plateassembly 1020, it should be understood that two hanger plate assembliesmay be used. An example of this is shown in FIG. 12, where patch panelsystem 1000″ is identical to patch panel system 1000′ in all respectswith the exception of the number of hanger plate assemblies. Hangerplate assembly 1020 a″ may be identical to hanger plate assembly 1020′in structure and function. A second hanger plate assembly 1020 b″, whichmay be an identical but mirror configuration of hanger plate assembly1020 a″, may be coupled to right wall of inner housing 1003. Theadditional hanger plate assembly 1020 b″ may provide for additionalmanagement of cables C2, particularly those coupled to near the rightside of the front of cassettes 1010.

Some of the systems and concepts described above are also described inU.S. Patent Publication No. 2017/0082815, the disclosure of which ishereby incorporated by reference herein. However, certain modificationsand/or additions to the above-described systems may be desirable.

One example of a modified patch panel system 1100 is illustrated inFIGS. 13A-F. Patch panel system 1100 may be similar to patch panelsystem 1000″, with one difference being the position of the hangar plateassembly in the stored condition. Patch panel system 1100 may includeouter housing 1102 (with or without door 1102D), inner housing 1103, andcassettes 1110 similar to those described in connection with FIGS. 10-12

Patch panel system 1100 is illustrated in a stored condition in FIG.13A, with an access door 1102D opened. Similar access doors 1102D may beprovided for other embodiments described herein if desired. A pluralityof cassettes 1110 are arranged in a vertically stacked configurationwithin inner housing 1103, with first and second hanger plate assemblies1120 a, 1120 b in a stored condition substantially between the sidewalls of inner housing 1103 and the side walls of outer housing 1102. Itshould be understood that, although two hanger plate assemblies 1120 a,1120 b are shown in FIGS. 13A-F, patch panel system 1100 may be providedwith only one of the hanger plate assemblies.

FIG. 13B is a perspective view of patch panel system 1100 with hangerplate assemblies 1120 a, 1120 b in the pulled out condition, which mayalso be referred to as the installation or maintenance condition. FIG.13C is a top view of patch panel system 1100 with hanger plateassemblies 1120 a, 1120 b in the pulled out condition, with outerhousing 1102 illustrated in an outline only and door 1102D fullyomitted. Similar to hanger plater assembly 1020′, hanger plateassemblies 1120 a, 1120 b may include a substantially rectangular firsthanger plate 1121 a coupled to inner housing 1103 by one or more hinges.A plurality of additional hanger plates 1121 b-e may be hingedly coupledto one another in succession, in a manner generally similar to thatdescribed above in connection with hanger plate assembly 1020′. However,it should be understood that the particular number and relative size ofthe hanger plates that make up hanger plate assemblies 1120 a, 1120 bmay be varied depending on the particular desired dimensions. Further,although the individual hanger plates 1121 a-e of hanger plateassemblies 1120 a, 1120 b are shown as individual members coupled byhinges, one or more of the hanger plates may be integral with adjacentplates, with the hinging motion provided by a living hinge mechanism.

A plurality of hangers 1123 may be coupled to hanger plate 1121 c ofeach hanger plate assembly 1120 a, 1120 b. Hangers 1123 may besubstantially similar or identical to hangers 1023 described above inconnection with hanger plate 1020. However, hangers 1123 may takealternate forms, which may be similar to rear hanger plates 1027.Preferably, whatever form the hangers 1123 take, one hanger ispositioned substantially aligned with each cassette 1110 that may havecables (not shown) extending therefrom, such that each hanger is capableof supporting and/or securing cables extending into or out of acassette. Further, although hangers 1123 are shown as being attached tohanger plate 1121 c, the hangers may be attached to other hanger platesof hanger plate assemblies 1120 a, 1120 b. Because hangers 1123 may bethe first point of support of cables extending into or out of a cassette1110, the hangers are preferably positioned on a hanger plate 1121 a-eclose to the proximal face of the cassette so that the cables do notextend a significant distance without support from a correspondinghanger.

Referring to FIG. 13B, cables (not shown) may extend out of the proximalend of a first cassette 1110 and to the corresponding hanger 1123 forsupport. Those cables may continue to extend to an additional cableretainer 1130. A plurality of additional cable retainers 1130 may bepositioned on hanger plate 1121 e of each hanger plate assembly 1120 a,1120 b. In the illustrated embodiment, each cable retainer 1130 mayinclude a rounded portion 1131 extending substantially orthogonally tothe hanger plate to which it is attached. The cables may wrap around therounded portion 1131 and extend back toward another hanger 1123 at adifferent vertical height corresponding to a different cassette.Alternately, the cables may wrap around the rounded portion 1131 of onecable retainer 1130 and extend to the rounded portion of another cableretainer, at which point the cables may extend back toward anotherhanger 1123 corresponding to a different cassette 1110. The size of therounded portions 1131 may be chosen to provide a minimum bending radiusfor cables wrapping around the rounded portion so as to minimize damageto the cables. Each cable retainer 1130 may also include a flat portion1132 which may extend substantially parallel to the hanger plate 1121 eto which the cable retainer is attached. Flat portions 1132 may helpmaintain organization of the cables and avoid them from falling off therounded portion 1131. In the illustrated embodiment, each hanger plate1121 e includes three cable retainers 1131, with an additional flatportion 1132 near the bottom of the hanger plate. However, it should beunderstood that more or fewer cable retainers 1130 (or portions thereof)may be coupled to hanger plate 1121 e or another hanger plate. In someembodiments, flat portions 1132 may be rotatable. In the condition shownin FIG. 13B, cables positioned between the flat portion 1132 of a cableretainer 1130 and the corresponding hanger plate 1121 e may be difficultto remove from the cable retainer without disconnecting an end of thecable from a cassette 1110. Thus, flat portions 1132 may be rotated suchthat, if desired, a user may be able to relatively easily slide cablesoff of the rounded portion 1131 without disconnecting an end of thecable from the cassette 1110 to perform maintenance.

Still referring to FIG. 13B, a cover 1140 may be coupled to hanger plate1121 e. The cover 1140 may be hingedly coupled to a bracket 1141.Bracket 1141 may include portions near the top, bottom, and free lateraledge of hanger plate 1121 e, with the cover 1140 hingedly coupled to theportion of the bracket near the free lateral edge. With thisconfiguration, the cover 1140 may be opened to the condition shown inFIG. 13B in order to access cables that are supported by cable retainers1130. When maintenance is complete, the cover 1140 may be closed so asto overlie the cable retainers 1130, which may further help maintain thecables in the desired positions when the hanger plate assemblies 1120 a,1120 b are in the stored condition, described in greater detail below.It should be understood that one or more hangers may be provided on therear of the hanger plates 1121 a-e in order to help maintain additionalcables. For example, hanger plate 1121 e may include another set ofcable retainers and a corresponding bracket and cover, which may be in asimilar or identical configuration as that described above, on the rearside of that plate. Further, one or more windows W may be provided inone or more of the hanger plates. For example, as best shown in FIG.13B, hanger plate 1121 d may include two portions forming windows W suchthat a cable may pass from one side of the hanger plate to the oppositeside of the hanger plate through the window, if desired. Still further,a number of additional hangers 1133 may be positioned on the hangerplate assemblies 1120 a, 1120 b. For example, individual hangers 1133may be placed on the bottom-most portions of the front and/or back ofdesired panels so that the cables do not drag on the floor of outerhousing 1102 or any other surface. An example of an individual hanger1133 is best illustrated in FIG. 13D.

Once maintenance of the cables is complete, the cassettes 1110 may allbe pushed distally into the inner housing 1103, the flat portions 1132of the cable retainers 1130 may be rotated to the condition shown inFIG. 13B, and the covers 1140 may be rotated closed, as shown in FIG.13C. The user may then rotate the hanger plate assemblies 1120 a, 1120 bso that the hanger plate assemblies wrap around the outside of innerhousing 1103, with the terminal hanger plate 1121 e positioned betweenthe side walls the inner housing 1103 and outer housing 1102, as shownin FIGS. 13D-F. It should be understood that the outer housing 1102 issubstantially omitted from FIGS. 13D-E to better illustrate the storedcondition of the hanger assemblies 1120 a, 1120 b. As should be clearfrom FIGS. 13D-F, in the stored condition of the hanger plate assemblies1120 a, 1120 b, the cables are neatly and securely organized, with themany portions of the cables being protected by elements of the system,including for example outer housing 1102 and covers 1140.

FIG. 13G illustrates a plate guide 1190 that may be used to guide andlock hanger plate assembly 1120 a into the stored condition. Plate guide1190 may extend along a length of inner housing 1103 and be connected tothe inner housing by a bracket 1191 or any other suitable connector.Plate guide 1190 may be substantially “U”-shaped in transverse crosssection, with the sides of the “U”-shape helping to guide hanger plates1121 e, 1121 d, and 1121 c into the stored condition. A proximal end ofplate guide 1190 may include rounded portions 1192 extending away fromthe proximal opening of the guide plate 1190. As the terminal hangerplate 1121 e is initially guided into the open end of plate guide 1190,the rounded portions 1192 may help guide the terminal hanger platetoward the center of the proximal opening in the plate guide. Inaddition, plate guide 1190 may include an aperture 1193 that aligns witha corresponding aperture 1194 in one of the hanger plates, hereillustrated in hanger plate 1121 c, when the hanger plate assembly is inthe stored condition. As a user continues to slide hanger plate assembly1120 a in the direction indicated by arrow 1195 toward the storedcondition, eventually apertures 1193 and 1194 will align. When apertures1193 and 1194 are in alignment, a locking element 1196 may be insertedthrough both of the apertures to lock the hanger plate assembly 1120 ain the stored condition. Locking element 1196 may be a simplecylindrical structure that physically restricts motion of hanger plate1121 c relative to plate guide 1190 when the locking element is insertedthrough both apertures 1193, 1194. The locking element 1196 and/orapertures 1193, 1194 may include additional structures, such as matingthreads or the like, to further lock the hanger plate assembly 1120 a toplate guide 1190 in the stored condition. It should be understood that,although many of the embodiments described above involve hanger platesor hanger plate assemblies, such as hanger plate assemblies 1120 a, 1120b, that hinge “backwards” so that, in a stored condition, the fronts ofthe cassettes are exposed, in other embodiments the hanger plates orhanger plate assemblies may hinge “forwards” so that, in the storedcondition, the hanger plates or hanger plate assemblies cover the frontsof the cassettes. This configuration, which is described in otherembodiments below in connection with certain systems with dome closures,such as in FIGS. 15A-D and 18-20D, may be applied for systems with thetypes of housings described, for example, in connection with FIGS.10A-14H. It should also be understood that, for embodiments describedabove as having an inner housing and an outer housing, such as innerhousing 1103 and outer housing 1102, bolts, connectors, or other supportmembers may be provided to securely fix the bottom of the inner housingto the bottom of outer housing and/or to fix the top of the innerhousing to the top of the outer housing.

FIGS. 14A-B are schematic illustrations of hanger plate assembly 1120 ain the pulled out condition and stored condition, respectively, withother components of the system omitted. When hanger plate assembly 1120a is in the pulled out condition with the individual hanger plates beingaligned in a substantially straight manner, cables C extend along a pathhaving a first length L1 from a cassette to the farthest position alongthe hanger plate assembly. When the hanger plate assembly 1120 a istransitioned to the stored condition of FIG. 14B, with the hanger plateassembly being curved with the cables C on the outside of the curve, thecables may extend along a path having a second length L2 from thecassette to the farthest position along the hanger plate assembly. Theextent of the difference between path lengths L1 and L2 may be dependentupon the distance D6 which the cables C are positioned from the surfaceof the plates of the hanger plate assembly 1120 a. In a theoreticalconstruction in which the cables C had an infinitely small thickness andwere effectively positioned directly on the surface of the plates ofhanger plate assembly 1120 a, the difference between first and secondpath lengths L1, L2 may be zero or negligible. However, in practice,cables C have thicknesses, particularly when a plurality of cables C arebundled together, such that the distance D6 is non-negligible. As such,as hanger plate assembly 1120 a is transitioned from the pulled outcondition of FIG. 14A to the stored condition of FIG. 14B, depending ona slack length of the cables C extending distally from the hangar plateassembly 1120 a, the cables C may become stressed because second pathlength L2 is greater than first path length L1, which may result intension on the cables increasing.

FIGS. 14C-H illustrate various modifications that may be made to hangerplate assembly 1120 a to help reduce or eliminate possible tension onthe cables C as the hanger plate assembly transitions from the pulledout condition to the stored condition.

FIGS. 14C-D illustrate a highly schematic view of hanger plate assembly1120 a in the pulled out and stored condition, respectively, with acable support 1150 coupled to one of the plates of the hanger plateassembly. Support 1150 may have a first end coupled to one of the hangerplates and a second free end, and the free end may include a blunt tipthat may provide support for the cables C. In the pulled out conditionof FIG. 14C, the free end of support 1150 may extend a first distanceaway from the surface of the hanger plate to which it is attached, sothat cables C extend along a path having a length L1′ that may begreater than path length L1 of FIG. 14A. As hanger plate assembly 1120 ais transitioned to the stored condition shown in FIG. 14D, the free endof support 1150 may move closer to the surface of the hanger plate towhich the support is attached. For example, the first end of support1150 may be rotatably coupled to the hanger plate such that the free endrotates toward the hanger plate and the support moves closer to parallelto the hanger plate to which it is attached. In another example, support1150 may have a telescopic or other translatable configuration such thatthe free end of the support slides toward the end of the supportattached to the hanger plate. Regardless of the mechanism, the length ofpath L2′ is preferably equal or about equal to the length of path L1′,such that the cables C do not experience an increase in stress ortension during transition from the pulled out condition to the storedcondition.

FIGS. 14E-F illustrate a highly schematic view of hanger plate assembly1120 a in the pulled out and stored condition, respectively, with anextendable hanger plate 1160 included within the hanger plate assembly.Extendable hanger plate 1160 may have an extended condition, shown inFIG. 14E, and a retracted condition, shown in FIG. 14F. The extendablehanger plate 1160 may include two end portions that are coupled togetherby a third center portion, with the two end portions slideable towardand away from one another over the center portion. However, othermechanisms may be suitable. For example, extendable hanger plate 1160may be stretchable so that it can be stretched to the extendedcondition, and upon release, contract to the retracted condition.Regardless of the mechanism, the length of path L2″ is preferably equalor about equal to the length of path L1″, such that the cables C do notexperience an increase in stress or tension during transition from thepulled out condition to the stored condition.

FIGS. 14G-H illustrate a highly schematic view of hanger plate assembly1120 a in the pulled out and stored condition, respectively, with arepositionable cable retainer 1130′ provided on the terminal hangerplate of the hanger plate assembly. Repositionable cable retainer 1130′may be similar in structure to cable retainers 1130 or any other cableretainer or hanger described herein, with the exception thatrepositionable cable retainer 1130′ may move laterally along the surfaceof the hanger plate to which it is attached. For example, a slot may beprovided within the hanger plate to which repositionable cable retainer1130′ is attached, with a portion of the repositionable cable retainerpositioned within the slot so that it may slide along the slot. In thepulled out condition shown in FIG. 14G, repositionable cable retainer1130′ may be positioned relatively close to the free edge of hangerplater assembly 1120 a, such that cable C extends along a path having alength L1′″. As hanger plate assembly 1120 a is transitioned to thestored condition, any increased tension on cables C may causerepositionable cable retainer 1130′ to slide away from the free edge ofthe hanger plate assembly, as shown in FIG. 14H. It should be understoodthat, in FIG. 14H, the prior position of the repositionable cableretainer 1130′ is illustrated with a dashed line. It should beunderstood that other particular mechanisms may be suitable to allow forrepositionable cable retainer 1130′ to translate or otherwise movetoward or away from the free edge of the hanger plate assembly 1120 a.Regardless of the mechanism, the length of path L2′″ is preferably equalor about equal to the length of path L1′″, such that the cables C do notexperience an increase in stress or tension during transition from thepulled out condition to the stored condition.

For the modifications described above in connection with FIGS. 14C-14H,it may be possible that, during use, actual path lengths L1′, L1″, andL1′″ may be greater than the corresponding intended path lengths L2′,L2″, and L2′″. Although these modifications are intended to result insubstantially equal path lengths, path lengths L1′. L1″, and L1′″ couldpotentially be greater than corresponding path lengths L2′, L2″, andL2′″, for example due to user error. In one example, during aninstallation step, a user might unintentionally introduce extra lengthin the cable path in the pulled out condition, such that the actual pathlengths are L1′+X, L1″+X, or L1′″+X, wherein X is the additional lengthresulting from the user error. In this situation, upon transition to thestored condition, the cables could have unwanted slack due the extralength X introduced into the system by the user. As a result, the actualpath lengths L1′, L1″, and L1′″ may be greater than the correspondingintended path lengths L2′, L2″, and L2′″ by a length equal to X. Thisextra slack of the cables C in the stored condition could result in thecables slipping off cable retainers 1130. In order to protect againstthis possibility, support 1150, extendable hanger plater 1160, and cableretainer 1130′ may be provided with a tension or biasing element so thatthe support element 1150 is biased (for example spring-biased) to theposition shown in FIG. 14C, the extendable hanger plate 1160 is biased(for example spring-biased) to the position shown in FIG. 14E, and thecable retainer 1130′ is biased (for example spring-biased) to theposition shown in FIG. 14G. With this configuration, in thecorresponding pulled-out conditions shown in FIGS. 14C, 14E, and 14G,cables C may be supported by the hanger plate assembly 1120 a withlittle or no tension. As the user moves the hanger plate assembly 1120 ato the corresponding stored conditions shown in FIGS. 14D, 14F, and 14H,the bias provided to the support 1150, extendable hanger plate 1160, orcable retainer 1130′ may place a small tension force on the cables tohelp ensure that the cables remain secured and positioned close to thehanger plate assembly. In other words, any slack in the cables C thatmay otherwise have been created by the user initially when the hangerplate assembly is in the pulled out condition may be partially or fullyeliminated in the stored condition by the biasing force of the supportelement 1150, extendable hanger plate 1160, or cable retainer 1130′. Itshould be understood that this biasing force is preferably small sothat, although any slack may be removed, the cables are not damaged bythe biasing forces.

In addition to tension potentially resulting in mechanical stresses orbreakages in the cables, bending of the cables may separately result inoptical signal loss. FIGS. 15A-D show a patch panel system 1200according to still another aspect of the disclosure. Among otheradvantages described in greater detail below, patch panel system 1200may simultaneously avoid stressing or tensioning cables during cablestorage, as well as limit the amount of cable bending that couldotherwise result in optical signal loss.

FIG. 15A shows a perspective view of patch panel system 1200 with hangerplate assemblies 1220 a, 1220 b in a maintenance condition. Patch panelsystem 1200 may include a housing 1202. In the illustrated embodiment,housing 1202 may have a substantially cylindrical shape. As shown,housing 1202 does not form a fully enclosed cylinder, but ratherincludes a closed portion that has the shape of a portion of a cylinder,with an open proximal face to allow access to cassettes 1210 and cablesC stored therein. Housing 1202 may include a plurality of slots stackedin a vertical arrangement, with each slot adapted to hold a tray orcassette 1210 in sliding engagement with the slot, although in practiceevery slot may not necessarily have a cassette 1210 received therein.Cassettes 1210 may be substantially similar to the cassettes 1010described above, with the cassettes being in a vertically stackedconfiguration, although only one cassette is illustrated in FIG. 15A.Cassettes 1210 may be modified compared to other cassettes describedherein in order to better fit within the cylindrically shaped housing1202, whereas other cassettes such as cassettes 1010 are configured tobe received within a rectangular housing. However, other than theparticular shape of cassettes 1210, the cassettes may otherwise besimilar or identical to the cassettes described above.

To assist in the management of cables C connected to patch panel system1200, the patch panel system includes pivotable hanger plate assemblies1220 a, 1220 b. Hanger plate assembly 1220 a may be substantially amirror image of hanger plate assembly 1220 b, but otherwise identical ornearly identical. Thus, only hanger plate assembly 1220 a is describedin detail. Hanger plate assembly 1220 a may include a hanger plate 1221,which may be a single, curved plate having a first edge pivotablycoupled to housing 1202 and a second free edge opposite the first edge.Although shown as a single curved plate, hanger plate 1221 may otherwisebe formed of a plurality of plates that are coupled together, similar toother hanger plate assemblies described above. A plurality of hangers1223 may be positioned on the inner face of hanger plate 1221, near thefirst edge of the hanger plate coupled to housing 1202. Hangers 1223 maybe similar in structure to any of the hangers described above, includinghaving at least one substantially flat surface on which cables C mayrest. Preferably, each hanger 1223 is associated with a cassette 1210(or otherwise a corresponding slot within housing 1202). An exemplarycassette 1210 is illustrated in FIG. 15B. In addition to hangers 1223, aplurality of cable retainers 1230 may be positioned on the interior faceof hanger plate 1221, preferably in a vertically aligned configuration.Cable retainers 1230 may be substantially similar or identical to cableretainers 1130, and are preferably positioned near the second edge ofhanger plate 1221. Hanger plate 1221 may also include a plurality ofwindows W to allow cables C to pass across hanger plate assembly 1220 aand exit patch panel system 1200. In the illustrated embodiment, eachwindow W is formed as a vertical slot in a top or bottom edge of thehanger plate 1221 between the hangers 1223 and the first edge of thehanger plate pivotably coupled to the housing 1202. However, it shouldbe understood that windows W could take other shapes, positions, andmore or fewer windows could be provided. For example, FIG. 18illustrates a patch panel system 1200′ that is identical to patch panelsystem 1200 in all respects, with the exception that windows W′ areformed in the top and bottom edges of hanger plate 1221′ between thehangers 1223′ and the cable retainers 1230′.

As shown in FIG. 15A, cables C may pass from the front or rear ofconnectors on a cassette 1210, pass over and rest upon a correspondinghanger 1223, wrap around one or more cable retainers 1230, pass over andrest upon another hanger, and connect to connectors at the front or rearof a cassette on a different vertical level within housing 1202.Alternately, some cables C may pass through one of the windows W andconnect to a separate component outside of patch panel system 1200. Auser may perform maintenance on cables C of patch panel system 1200 whenthe hanger plate assemblies 1220 a, 1220 b are in an open or maintenancecondition shown in FIG. 15A. When maintenance is complete, the user mayrotate the hanger plate assemblies 1220 a, 1220 b toward the open faceof housing 1200, which may be referred to as a stored or installedcondition and is shown in FIGS. 15C-D. In the stored condition, one ofthe hanger plate assemblies 1220 a, 1220 b may at least partiallyoverlie the other hanger plate assembly. This may result in housing 1202and the hanger plate assemblies 1220 a, 1220 b together having asubstantially cylindrical shape, with the majority of cables C beinghidden and protected behind one or both of the hanger plate assemblies.It should be understood that although two hanger plate assemblies 1220a, 1220 b are shown, a single hanger plate assembly may be sufficient,with the single hanger plate assembly preferably being dimensioned tocover most or all of the open face of the housing 1202 when the hangerplate assembly is in the stored condition.

When the hanger plate assemblies 1220 a, 1220 b of patch panel system1200 are in the maintenance or open condition as shown in FIG. 15A,cables C may be subjected to a maximum level of stress or tension. Whenthe hanger plate assemblies 1220 a, 1220 b of patch panel system 1200are in the installed or stored condition as shown in FIGS. 15C-D, thecables C may be subjected to a minimal level of stress or tension.Advantageously, patch panel system 1200 may avoid producing tension on,and limit an extent and degree of turns or bends in, the cables C whenthe hanger plate assemblies 1220 a, 1220 b patch panel system 1200 arein the stored condition. FIGS. 16A-B illustrate top cut-away views ofpatch panel systems 1100 and 1200 when the hanger plates are in thestored/installed condition, respectively, to illustrate the point. Inparticular, when hanger plate 1120 a of patch panel system 1110 is inthe stored condition, the cables connected closest to the hinge of thehanger plate assembly 1120 a may bend to an angle α1, which may approach0 degrees. The cables connected farthest away from the hinge of thehanger plate assembly 1120 a may bend to an angle α2, which may approach90 degrees. In comparison, in the stored condition of the hanger plate1220 a of patch panel system 1200, the cables connected closest to thehinge may experience a bend to an angle α4 of not less than about 45degrees, with the cables connected farthest from the hinge experiencingbending to an angle α3, which may approach 135 degrees. By providing forreduced tension and a minimum bend angle of the cables in the storedcondition of patch panel system 1200, advantageously optical signal lossand mechanical stress on the cables C may be avoided.

It should be understood that other patch panel systems described herein,such as patch panel system 1000 and 1100, may be modified so that thehanger plate assemblies rotate similar to hanger plate assemblies 1220a, 1220 b of patch panel system 1200. In other words, patch panelsystems 1000 and 1100 may be modified so that the hanger plates rotatein the opposite directions as shown so that, in the stored condition,the hanger plate assemblies at least partially cover the open face ofthe respective housings, which may result in reduced stress and/orbending in the cables. An additional benefit of this type ofmodification, is that in the stored or installed condition of the hangerplate(s), the majority of the cables C are not visible to a user. Such asituation may be more intuitive and make it easier for a user toidentify when the respective patch panel system is in a condition formaintenance (e.g. because the cables are exposed) and when the patchpanel system is in a condition for storage (e.g. because the cables arehidden).

Providing patch panel system 1200 with a substantially cylindrical shapewhen in the stored condition may provide additional benefits. Forexample, although patch panel system 1200 could be used in any suitableenvironment, it may be particularly suited for use in undergroundenvironments. For example, for various regulatory or environmentalreasons, it may not be possible or allowable for a patch panel system tobe positioned above ground or mounted to an above-ground structure. Insuch a situation, it may be permissible to house the patch panel systemunderground. If a patch panel system is housed underground, it may beparticularly important to seal the interior of the patch panel systemfrom moisture or other environmental conditions that could damage thesystem. The cylindrical shape of patch panel system 1200 may be suitedfor use with additional structures to facilitate such a protectiveenvironment. For example, as shown in FIG. 17, patch panel system 1200may be part of a larger system that includes a main cover 1280 and acover cap 1290. As illustrated, main cover 1280 may be a substantiallysolid cylindrical member with a hollow interior which may be slid overhousing 1202 of patch panel system 1200. Cover cap 1290 may becylindrical and include mating features, such as external threads, tocouple to main cover 1280, for example with a water tight seal. Thecovering system may provide a high level of protection of patch panelsystem 1200 when the hanger plates are in the installed condition, andthe housing is covered by main cover 1280 and with cap 1290 secured tothe main cover.

FIGS. 19A-D show various perspective exploded views of a patch panelsystem 1300, unassembled, with hanger plates in an open or maintenancecondition. FIGS. 20A-D show views corresponding to FIGS. 19A-D in anassembled state, again with hanger plates in the maintenance condition.The patch panel system of FIG. 19A may be generally similar to patchpanel system 1200 and may include a support frame 1302 that may have across-sectional thickness of between about 2 mm and about 7 mm andinclude metal such as aluminum. The thickness of support frame 1302 maydepend upon the particular metal used, and may be between about 3 mm andabout 5 mm, including about 4 mm, if the support frame is formed ofaluminum. Frame 1302 may be formed of a single integral piece ormultiple pieces joined together, and may include one or more side walls1304, a top portion 1306, and/or a bottom portion 1308. Frame 1302 mayform a housing or may overlie a housing or inner chassis that includes aplurality of slots stacked in a vertical arrangement, with each slotadapted to hold a tray or cassette 1310 in sliding engagement with theslot, although in practice every slot may not necessarily have acassette 1310 received therein. Cassettes 1310 may be substantiallysimilar to cassettes 1210 or any of the other cassettes describedherein. In one embodiment, all components within patch panel system 1300may be mounted and/or coupled to the frame 1302, and the frame 1302 maybe electrically coupled to grounding elements of one or more of thecomponents within the patch panel system 1300 such that the frame 1302may serve as a common grounding element for the entire patch panelsystem 1300. The frame may include a top portion that may act as ahandle and help guide a protective cap similar to cover 1280 over theframe.

To assist in the management of cables C connected to patch panel system1300, the patch panel system may include pivotable hanger plateassembles 1320 a and 1320 b, which may be similar in many respects tohanger plate assemblies 1220 a and 1220 b. In some embodiments, hangerplate assemblies 1320 a and 1320 b may be substantial mirror images ofone another. However, in the illustrated embodiment, hanger plateassemblies 1320 a and 1320 b may have at least some differences.

Hanger plate assembly 1320 a may include a hanger plate 1321 a, whichmay be a single, curved plate having a first edge pivotably coupled to afirst side wall 1304 of frame 1302 and a second free edge opposite thefirst edge. Although shown as a single curved plate, hanger plate 1321 amay otherwise be formed of a plurality of plates that are coupledtogether, similar to other hanger plate assemblies described above. Aplurality of hangers 1323 a may be positioned on the inner face ofhanger plate 1321 a, near the first edge of the hanger plate coupled toframe 1302. Hangers 1323 a may be similar in structure to any of thehangers described above, including having at least one substantiallyflat surface on which cables C may rest. Preferably, each hanger 1323 ais associated with a cassette 1310 (or otherwise a corresponding slotwithin patch panel system 1300). In addition to hangers 1323 a, aplurality of cable retainers 1330 a may be positioned on the interiorface of hanger plate 1321 a, preferably in a vertically alignedconfiguration. Cable retainers 1330 a may be substantially similar oridentical to cable retainers 1130, and may include a first groupextending vertically and a second group extending horizontally, forexample where the first group extends about 90 degrees relative to thesecond group. Hanger plate 1321 a may also include one or more recessesor windows W to allow cables C to pass across hanger plate assembly 1320a and exit patch panel system 1300, for example as shown in FIG. 20B. Inthe illustrated embodiment, windows W are formed as horizontal recessesin the top and bottom edges of the hanger plate 1321 a near the firstedge of the hanger plate pivotably coupled to the frame 1302. However,it should be understood that windows W could take other shapes,positions, and more or fewer windows could be provided. For example,recesses are also provided in the illustrated embodiment at the top andbottom of the second edge of hanger plate 1321 a, and those recesses maybe capable of performing the same or a similar function as window W.

Although in some embodiments, hanger plate assembly 1320 b may be amirror image of hanger plate assembly 1320 a, in the illustratedembodiment, hanger plate assembly 1320 b may have some differences.Hanger plate assembly 1320 b may include a hanger plate 1321 b, whichmay be a single plate having a first edge pivotably coupled to a secondside wall 1304 of frame 1302 and a second free edge opposite the firstedge. Although shown as a single plate, hanger plate 1321 b mayotherwise be formed of a plurality of plates that are coupled together,similar to other hanger plate assemblies described above. While hangerplate 1321 a is shown as curved (with a convex exterior surface and aconcave interior surface), hanger plate 1321 b may be substantiallyplanar. With the illustrated configuration, in operation it ispreferable that, in an installed condition of the hanger plateassemblies 1320 a, 1320 b, hanger plate 1321 b is positioned betweencassettes 1310 and hanger plate 1321 a. In other words, whentransitioning the hanger plate assemblies 1320 a, 1320 b of patch panelsystem 1300 from a maintenance condition to an installed condition,hanger plate 1321 b is closed first, and hanger plate 1321 a is closedsecond. A plurality of hangers 1323 b may be positioned on the innerface of hanger plate 1321 b, near the first edge of the hanger platecoupled to frame 1302. Hangers 1323 b may be similar in structure to anyof the hangers described above, including having at least onesubstantially flat surface on which cables C may rest. Preferably, eachhanger 1323 b is associated with a cassette 1310 (or otherwise acorresponding slot within patch panel system 1300). In addition tohangers 1323 b, a plurality of cable retainers 1330 b may be positionedon the interior face of hanger plate 1321 b, preferably in a verticallyaligned configuration. Cable retainers 1330 b may be substantiallysimilar or identical to cable retainers 1130, and may extend vertically.Hanger plate 1321 b may also include one or more recesses or windows Wto allow cables C to pass across hanger plate assembly 1320 b and exitpatch panel system 1300. In the illustrated embodiment, windows W areformed as slots at the top and bottom of the edge of the hanger plate1321 b that is coupled to side wall 1304. However, it should beunderstood that windows W could take other shapes, positions, and moreor fewer windows could be provided. The top and/or bottom of hangerplate 1321 b may also include horizontal slots that may function ashandles H to facilitate a user gripping positioning hanger plate 1321 b.

Patch panel system 1300 may further include one or more side hangers1340 a-b. Side hangers 1340 a-b are preferably formed of metal, althoughother materials may be suitable. In the illustrated embodiment, one sidehanger 1340 a is mounted on the first side wall 1304 adjacent hangerassembly 1320 a, and another side hanger 1340 b is mounted on the secondside wall 1304 adjacent hanger assembly 1320 b. Side hangers 1340 a-bare illustrated in isolation in FIGS. 21A-B. Both side hangers 1340 a-bmay include may include a plurality of first extension members 1341 a-bthat extend substantially orthogonally away from the corresponding sidewalls 1304 and include tips that extend substantially parallel to thecorresponding side walls. The first extension members 1341 a-b may begrouped in clusters, with the tips of the extension members extendingaway from a center of the cluster. In the illustrated embodiment, sidehanger 1340 a includes one cluster of four extension members 1341 a, andside hanger 1340 b includes two clusters of four extension members 1341b, although it should be understood that the number and position of theextension members may be different in other embodiments. Both sidehangers 1340 a-b may also include a plurality of second extensionmembers 1342 a-b that extend substantially orthogonally away from thecorresponding side walls 1304 and include tips that extend substantiallyparallel to the corresponding side walls, but in opposite direction tothe tips of extension members 1341 a-b. With this configuration, cablesC entering or exiting patch panel system 1300 may be routed around andthrough a cluster of first extension members 1341 a-b and may be atleast partially surrounded by corresponding second extension members1342 a-b, helping to keep the cables C in place, for example as shown inFIGS. 20C-D.

Patch panel system 1300 may include a base 1390 onto which the bottomside 1308 of frame 1302 is mounted. Base 1390 may be substantiallycircular and include one or more ports 1391 a positioned to be adjacentto the side wall 1304 of frame 1302 adjacent hanger plate assembly 1320a when the system is assembled, and one or more ports 1391 b positionedto be adjacent to the side wall 1304 of frame 1302 adjacent hanger plateassembly 1320 b when the system is assembled. In the illustratedembodiment, base 1390 may include two ports 1391 a and two ports 1391 bfor cables respectively entering and exiting patch panel system 1300 oneach side of the frame, although other numbers and positions of portsmay be suitable. In some embodiments, base 1390 may be formed of ametal.

In other embodiments, it may be preferable that base 1390 is formed of aplastic and mounted to frame 1302 via metal bolts to assist in groundingpatch panel system 1300. For example, as shown in FIG. 21C, base 1390may include a plurality of male-to-male connectors in the form of bolts1392 that can be secured through corresponding holes in the bottom 1308of frame 1302 via nuts 1393 or other anchoring members. In otherembodiments, as shown in FIG. 21D, base 1390 may include one or morefemale-to-female connectors 1394 that may be utilized to secure thebottom 1308 of frame 1302 to base 1390. It should be understood thatother suitable mechanisms may be used to couple the frame 1302 to thebase 1390. For example, as shown in FIG. 21E, a bolt 1392 may have afirst threaded end over which a nut 1393 may be threaded. A second endof bolt 1392 may include a head, as shown, or may otherwise includethreading with another nut similar to the first end of the bolt. One ormore gaskets, such as O-ring 1399, may interface between the bolt 1392and the base 1390. In the illustrated example, O-ring 1399 is positionedwithin a recess in base 1390 and around a shaft of bolt 1392. O-ring1399 or other gaskets may facilitate sealing between the base 1390, bolt1392, and/or frame 1302, particularly if the bolt and base havedifferent coefficients of thermal expansion. In such cases, O-ring 1399may help maintain a seal if bolt 1392 expands at a different rate thanbase 1390 as temperatures change. The use of metal bolts may provide anexternally accessible grounding element for the entire patch panelsystem 1300 based on the bolt being electrically conductively coupled tothe frame 1302.

FIG. 21F shows an enlarged view of portions of frame 1302 coupled tobase 1390, with other components omitted for clarity of illustration. Insome embodiments, the bottom 1308 of frame 1302 may be integral with theside walls 1304 of the frame. In the illustrated embodiment, however,the bottom 1308 and side walls 1304 of frame 1302 are formed as separatepieces and coupled together with fasteners 1305, which may be metalbolts with lock washers, although other fasteners may be appropriate.One or more shelves or ribs 1307 may be provided on an interior of frame1302, including attached to side wall 1304, which may support cassettes1310 thereon. One or more brackets 1312 may also be coupled to frame1302, for example one at each side wall 1304, to assist in securingincoming and/or outgoing cables C or groups of cables and to provide agrounding element extending from the frame 1302. Bracket(s) 1312 may beintegral with or separately attached to frame 1302. An outer cablesheath CS passing through a port 1391 b may be crimped or otherwisefixed to the bracket 1312. A buffer tube BT interior to the outer cablesheath CS may be crimped or otherwise fixed to the bracket 1312, andalso inner cables C within the outer cable sheath CS may be separatelyfixed together for example by crimping. If a ground conductor GC isincluded in the bundle of cables C, the ground conductor GC may beseparately fixed to the bracket 1312 for example by crimping. The groundconductor GC, if used, may function to ground the patch panel system1300, including a cover 1380 if the cover is electrically conductive. Ifa ground conductor GC is used, the bracket 1312 is preferably formed ofmetal or another conductive material. The connections of the cable(s) Cto the bracket 1312 may help resist pulling forces experienced by thecables C passing through the port 1391 b in the base 1390.

FIG. 21G illustrates an exemplary gasket 6000 that may be used to createa seal extending from a cable sheath, such a cable sheath CS of a cableas shown in FIG. 21F, to the base 1390 and/or other portions of port1391 b, although it should be understood that gasket 6000 may be usedfor creating a seal extending from cables to any other structuresthrough which the cables may pass as described herein. In theillustrated example, gasket 6000 may be substantially cylindrical withan opening passing therethrough for receiving cables, including cablesin a cable sheath CS. The gasket may include one or more side openings,such as a slit extending along a longitudinal length of the gasket 6000,to more easily pass cables from a position outside the gasket to aposition within the gasket. Preferably, gasket 6000 is formed of a softrubber tubing, although other materials, and in particular elastomericmaterials, may be suitable for use. Further, although gasket 6000 isillustrated as a cylinder with a central opening and a slit extendingalong the longitudinal length of the gasket, other shapes may besuitable depending on the shape of the volume in which the gasket isintended to be positioned.

FIG. 21H illustrates a cross-sectional view of gasket 6000 in use withinbase 1390 with a cable sheath CS passing through port 1391 b. It shouldbe understood that although gasket 6000 may have a substantiallycylindrical shape, when in position within port 1391 b the gasket may becompressed and change shape to substantially fill the volume in which itis positioned. FIG. 21H also illustrates a strain relief member 6002,which may be generally cylindrical, conical, or frustoconical, include acentral opening to allow for cable sheath CS to pass therethrough, andmay include external threads 6006 or other mating features to engagewith internal threads 6004 or other corresponding internal matingfeatures of port 1391 b. Strain relief member 6002 may help prevent orreduce strain on cables within cable sheath CS if the cable sheath ispulled sideways or bent at a position adjacent or spaced from the strainrelief member. One or more rotation stoppers or lockers 6008 may bepositioned on a bottom surface of base 1390 adjacent port 1391 b to helpreduce the likelihood of the strain relief member 6002 unintentionallybeing rotated to loosen or disconnect the strain relief member 6002 fromthe base 1390. One potential benefit of gasket 6000 is that the sealprovided by gasket 6000 may be less sensitive to differences in thecoefficient of thermal expansion between the base 1390 and the gasket6000 compared to other seals described herein. For example, astemperature of the environment changes, a change in temperature of thebase 1390 and the gasket 6000 may not result in any significantreduction in the effectiveness of the seal provided by the gasket.

FIG. 21I illustrates gasket 6000 in a port 1391 b that is an alternateto that shown in FIG. 21H. In particular, it may be preferable toprovide a gasket 6000 that has a length extending substantially thelongitudinal length of the port 1391 b in order to help ensure a goodseal between the cable sheath CS and the interior of base 1390. Theinternal threads 6004 on base 1390 may be provided on an extensionmember that extends below the remainder of the bottom surface of base1390, which may allow for a longer longitudinal length gasket 6000 to beused compared to that shown in FIG. 21H, which may provide for a betterseal.

In some circumstances, gaskets such as gasket 6000 may lose elasticityover time, which may result in a reduction in the effectiveness of thegasket as a seal means over time. In order to compensate for such a lossin elasticity, gasket 6000 may be used in conjunction with one or morebiasing elements 6010. For example, as shown in FIG. 21J, two biasingmembers 6020 may be positioned between a bottom surface of gasket 6000and a top surface of strain relief member. Upon initial placement,biasing members 6020 may be largely compressed. Over time, if gasket6000 begins to lose elasticity, the biasing members 6020 may begin toextend to maintain pressure on gasket 6000 to help maintain the seal,even as the gasket 6000 loses elasticity. It should be understood thatalthough two biasing members 6020 are illustrate in FIG. 21J, more orfewer biasing members may be used. Further, although biasing members6020 are illustrated as helical springs, the biasing members 6020 maytake any other suitable form, and may be provided in other positions.For example, as shown in FIG. 21K, gasket 6000 is illustrated as beingsplit into two pieces, with two biasing members 6020 positioned betweenthe two pieces of gasket 6000 to help maintain the seal if the pieces ofgasket 6000 lose elasticity over time. FIG. 21L, on the other hand,illustrates two biasing members 6020 positioned to contact the top ofgasket 6000 and an interior of the top surface of port 1391 b. Thefunction of the biasing members 6020 of FIG. 21L is identical to thosedescribed above. In another embodiment, as shown in FIG. 21M, one ormore biasing members 6020 may be positioned inside of gasket 6000, inany desired orientation, so that if gasket 6000 begins to loseelasticity over time, biasing members 6020 may help compensate for theloss and maintain the seal provided by gasket 6000.

Referring again to FIGS. 19A-20D, and in particular FIGS. 19C-D and20C-D, patch panel system 1300 may include a rear enclosure or cartridge1314 which may be used to store electronics, sensors, and/or additionalcable connector components. FIG. 20C illustrates that the rear cartridge1314 may be hingedly mounted to the frame 1302 so that rear cartridgecan be accessed by rotating the cartridge 1314 with respect to the frame1302. For example, rear cartridge 1314 may be hinged near a bottom endso that the top end rotates in a direction D1 away from the rear of theframe 1302, or the cartridge 1314 may be hinged near its top end so thatthe bottom end rotates in a direction D2 away from the rear of the frame1302. Referring to FIG. 20C, the cartridge 1314 may be in a storedcondition confronting a rear portion of the housing, such that asubstantially closed interior space is defined at the rear portion ofthe housing. In addition, when the cartridge 1314 is rotated withrespect to the frame to obtain a condition in which an interior of thecartridge 1314 may be accessed, the cartridge and the rear portion ofthe housing may define a substantially open interior space at the rearportion of the housing. It should be understood that other mechanismsmay provide for cartridge 1314 be moved so that the interior of thecartridge may be accessed. For example, the top and/or bottom of rearcartridge 1314 may be slidingly connected to components of patch panelsystem 1300 so that the cartridge can slide in either lateral direction,with the cartridge moving in a single plane. In other embodiments, thecartridge 1314 may be coupled to the frame 1302, for example by a cornerhinge, so that the cartridge may rotated to the left or right whileremaining in a single plane. Movement or rotation of cartridge 1314 in asingle plane (for example via the sliding mechanism or corner hingesmentioned above) may be particular suitable for double patch panelsystems, described in greater detail below.

Patch panel system 1300 may also include a cover 1380 similar to cover1280 of patch panel system 1200, although the covers may differ incertain aspects. Cover 1380 may be substantially dome-shaped, and atransverse cross-section of the cover is shown in FIG. 22A. As shown inFIG. 22A, cover 1380 may include a guide slot 1382 extending verticallyfrom a bottom of the interior of the cover 1380 toward a top of thecover. Although only one guide slot 1382 is shown, it should beunderstood that two guide slots 1382 are preferably included ondiametrically opposed portions of the interior of the cover. Further,the guide slot 1382 may take the form of a local recessed portion with arelatively wide recess near the bottom edge of the cover which tapers toa narrow portion which extends a distance toward the top of the interiorof the cover. Guide slots 1382 may help restrict the cover 1380 to fitover frame 1302 in a single orientation or one of a limited number oforientations. For example, the top portion 1306 of frame 1302 mayinclude a relatively straight or flat portion at a spaced distance froma top surface of the internal housing or chassis, and two end portionsthat extend beyond the side walls 1304 of frame 1302. As shown in FIG.22A, each guide slot 1382 may be sized to accept one of the end portionsof the top portion 1306 of frame 1302, so that the cover 1380 is unableto rotate with respect to the frame 1302 when the ends of the topportion 1306 of the frame 1302 are within the guide slots 1382. Therelatively wide portion of the guide slot 1382 near the bottom edge ofthe cover 1380 may assist in properly orienting the guide slots 1382with respect to the ends of the top portion 1306 of the frame 1302. Asnoted above, the end portions of the top portion 1306 of the frame 1302may extend beyond side walls 1304 of the frame 1302. With thisconfiguration, when cover 1380 encloses frame 1302, a gap space willremain between the side walls 1304 of the frame 1302 and the interiorwall of the cover 1380, as shown in FIG. 22B. Thus, if an itemunintentionally strikes the outside of the cover 1380, this gap spacemay provide extra protection to components covered by the cover 1380. Inaddition, the straight portion of the top portion 1306 of frame 1302 maybe spaced above the top of the internal housing or chassis to provide aconvenient grip region so that a user may use the top portion 1306 ofthe frame 1302 as a handle. As with cover 1280 and base 1290, cover 1380and base 1390 may provide a water-tight seal to patch panel system 1300,which may be facilitated by latch mechanisms described in greater detailbelow. It should be understood that, particularly when externalenvironmental conditions are not likely to cause damage to interiorcomponents of the system 1300, the cover 1280 may be omitted, with thehanger plate assemblies 1320 a, 1320 b serving to protect the interiorcomponents when in a stored condition. It should be understood that ifthe cover 1380 is omitted, other structures may be provided to protectthe side and rear portions of system 1300, with the front of the system1300 being protected by hanger plate assemblies 1320 a, 1320 b.

While the patch panel system 1300 is shown including hanger 1323 a, 1323b on the inside of the respective hanger plates 1321 a, 1321 b that aresimilar to hangers 1223, other types of hangers may be used in additionor as an alternative. For example, FIG. 23A shows a hanger unit 1323′that may be used in addition to or as a replacement for hangers 1323 aand/or 1323 b. Hanger unit 1323′ may include a support 1324′ and aplurality of individual hangers 1325′ extending from the support 1324′.The support 1324′ may be formed integral with the corresponding hangerplate 1321 a or 1321 b, or may be a separate member attached to thehanger plate. The free end of each hanger 1325′ may include a latchmember 1326′ that is hingedly coupled to the free end, for example by aliving hinge mechanism. The free end of each hanger 1325′ may alsoinclude a lip 1327′. In the illustrated example, half of the free end ofeach hanger 1325′ includes a latch member 1326′ and the other half ofthe free end includes the lip 1327′. The latch member of each hangerunit is shaped to receive and engage with the lip of another hanger unitin a latched configuration, as described below. Preferably, the positionof the latch member 1326′ and the lip 1327′ on the free end of eachhanger 1325′ is reversed between vertically adjacent hangers 1325′. Withthis configuration, the latch member 1326′ of a first hanger 1325′ maybe pivoted toward the lip 1327′ of a second hanger 1325′ positionedimmediately above the first hanger. Thus, each latch member 1326′ may bepivoted from an open condition, as shown in FIG. 23A, to a latchedcondition, as shown in FIGS. 23B-C, to create a closed space orcontinuous boundary between two vertically adjacent hangers 1325′. Inthe illustrated configuration, the lips 1327′ may be substantiallycylindrical, and each latch member 1326′ may include two prongs orflanges that form a cylindrical recess that clips over the cylindricalportions of the lips 1327′. It should be understood that the top-mosthanger 1325′ in hanger unit 1323′ need not include a latch member if thelatches are to be pivoted upward. In other embodiments, the latchmembers 1326′ may pivot downward, in which case the top-most hanger1325′ preferably includes a latch member 1326′ and the bottom-mosthanger 1325′ need not include a latch member 1326′. Further, it shouldbe understood that the lip portion 1327′ may include geometries otherthan cylindrical, and the latch members 1326′ may include anycomplementary geometry to the lips 1327′. Further, if support 1324′ isnot integral with the corresponding hanger 1321 a or 1321 b, the support1324′ may include features such as holes to assist in coupling thehanger unit 1323′ to the hanger, for example by screws or bolts.

Cover 1380 and/or base 1390 may include lock or latch mechanisms toassist in drawing cover 1380 into a locked condition, and maintainingthe locked condition, with respect to base 1390. FIGS. 24A-B show bottomperspective views of cover 1380 covering the patch panel system 1300with latch mechanisms engaged, drawing the cover 1380 securely to thebase 1390. In the illustrated embodiment four separate latches areillustrated. FIGS. 24A-B illustrate that base 1390 may include aplurality of ribs 1395. In the embodiment of FIG. 24A, four pairs ofribs 1395 each extend from an inner circumference of the underside ofbase 1390 toward a center circular extension 1396. In the embodiment ofFIG. 24B, four groups of ribs 1395 extend from an inner circumference ofthe underside of base 1390 toward a center, with each group of ribshaving the shape of a quarter circle with a first and second rib formingsubstantially a 90 degree angle with respect to one another, and a thirdrib forming substantially a 45 degree angle with respect to the firstand second ribs. In both embodiments, each latch extends between ribs sothat, at least in the latched condition, the latches do not protrudebeyond the bottom of the base 1390. However, in other embodiments, oneor more latches need not extend between ribs and may protrude beyond thebottom of the base 1390. The ribs 1395 may help strengthen the base 1390so that, when the base 1390 experiences forces from the latch mechanismsdrawing the cover 1380 onto the base 1390, the base 1390 resists anysignificant deflection, at least in part due to the strength of the ribs1395. It should be understood that ribs 1395 may be provided indifferent numbers and configurations than shown in FIG. 24A-B to providethe intended strength to resist deflection upon latching.

FIG. 24C shows a cross-section of a first embodiment of the latchmechanism of FIGS. 24A-B in a latched condition in which cover 1380 islatched to base 1390. In the illustrated embodiment, base 1390 mayinclude a recessed portion 1397 extending around an outer circumferenceof the base 1390, with an O-ring 1399 (or a gasket or other similarseal) seated within the recessed portion 1397. A bottom edge of cover1380 may include an upward facing hook 1381 that contacts the outersurface of base 1390 adjacent the recessed portion 1397, includingO-ring 1399. In the illustrated embodiment, the latch takes the form ofan over-center draw latch with lever 1383 rotatably coupled to the base1390 at a recess in the base 1390, and a downward facing hook portion1384 having a first end coupled to the lever 1383 and a second endconfigured to hook over the upward facing hook 1381 of the cover 1380.Rotating the lever 1383 of the latch mechanism in the counter-clockwise(“CCW”) direction in the view of FIG. 24C tensions and/or pulls thedownward facing hook 1384, and thus the upward facing hook portion 1381of the cover 1380, into close contact with the base 1390. Rotating thelever 1383 in the opposite clockwise (“CW”) direction releases tensionon downward facing hook 1384 and thus also releases tension on upwardfacing hook 1381 of cover 1380. An inner surface of the upward facinghook 1381 that contacts the O-ring 1399 may be provided at an angle α tovertical, between about 0 degrees (vertical) and about 45 degrees.Preferably, the angle α is between about 15 degrees and about 30degrees. The O-ring 1399 being in the recessed portion 1397 of base 1390advantageously provides that reduced force is needed to achieve adesired compression seal between the cover 1380 and base 1390, and alsopermits for ease of detachment of the cover 1380 from the base 1390.This functionality may be provided, at least in part, by the angle α ofthe inner surface of the hook portion 1381 of cover 1380 and thecorrespondingly angled outer surface of base 1390 adjacent recess 1397.It should be understood that multiple latch mechanisms may be providedwith the base 1390, although only one is shown in FIG. 24C.

Other latch mechanisms may also be suitable in place of that shown inFIG. 24C. For example, FIG. 24D shows a cross-section of an alternativeoption for a latch mechanism similar that shown in FIG. 24C. In theembodiment of FIG. 24D, cover 1380 includes the same hook portion 1381as described above, and base 1390 includes the same recessed portion1397 and O-ring 1399. The lever 1383′ of this latch mechanism mayfunction as a handle and be slightly differently structured than lever1383, the lever 1383′ having a substantially flat end that interactswith base 1390 and to which downward facing hook 1384 is coupled.Instead of rotating lever 1383′, it may be gripped as a handle andpulled to tension downward facing hook 1384. While tension is applied todownward facing hook 1384, lever 1383′ may be moved to the positionshown in FIG. 24D, with contact between the flat surface of the lever1383′ and a correspondingly flat inner surface of base 1390 maintainingthe lever 1383′ in the position shown. In the illustrated position,tension on downward facing hook 1348 results in tension being applied tothe upward facing hook 1381, drawing the cover 1380 into close contactwith the base 1390. To release the latch, a user may simply grasp lever1383′, move the flat surface of the lever out of contact with thecorrespondingly flat inner surface of the base 1390, and position thelever to release tension on the downward facing hook 1384.

FIG. 24E shows a cross-section of the latch mechanism of FIG. 24Clatching the cover 1380 to the base 1390 in two optional positions. Inparticular, FIG. 24E shows that the lever 1383 of the latch mechanismcan be positioned near the bottom of the base 1390 in a first position1383 a, or within a recess in the base 1390 in a second position 1383 bso that the base 1390 extends below the lever 1383 b. If lever 1383 isprovided in a recessed position 1383 b, an opening 1398 may be providedin the base 1390 for easy access to the recessed lever. It should beunderstood that FIG. 24E illustrates two levers 1383 a, 1383 b to showhow a first lever position option 1383 a would compare to a second leverposition option 1383 b, and both levers would not be included for asingle latch mechanism. One potential benefit of positioning the leverof a latch mechanism a farther distance from the point of contact withthe cover 1380, for example in position 1383 a compared to position 1383b, is that additional material may be provided for base 1390, resultingin a generally thicker and/or stronger base. With a stronger base,portions of the base 1390, and particularly portions of the baseadjacent the latch mechanism, may be less likely to buckle or otherwisedeform when forces due to latching the latch mechanism are applied tobase 1390.

FIGS. 24F and 24G show side and cross-sectional views, respectively, ofa latch mechanism that may be used as an alternate to or in addition toany of the latch mechanisms described above. The latch mechanism ofFIGS. 24F-G may be generally similar to that of FIG. 24C, with the mainexception being that the latch mechanism includes a substantially“U”-shaped engagement arm 1384″ instead of a downward facing hook 1384.As shown in FIG. 24G, lever 1383″ may be rotated in the CCW direction ofFIG. 24G to draw cover 1380 into close contact with base 1390 when theengagement arm 1384″ engages the upward facing hook 1381 of the cover.In order to release the tension on the cover, the lever 1383″ may berotated in the CW direction of FIG. 24G. As shown in FIG. 24F, base 1390may include an opening 1398 through which portions of the latchmechanism are positioned, similar to that shown in FIG. 24E. It shouldbe understood that opening 1398 is not visible in FIG. 24G and isrepresented with broken lines. The latch mechanism may be coupled to thebase 1390 by one or more fasteners, such as the bolts shown in dashedlines in FIG. 24G.

FIGS. 24H-I are cross-sections of a cover 1380″ and a base 1390″ thatmay be similar to any of the other covers and bases described herein,with an exception being the points of contact between the cover 1380″and the base 1390″. In this embodiment, a bottom portion of the cover1380″ may include a substantially triangular recess shaped to house agasket such as an O-ring 1399 therein, with the larger portion of thetriangular recess being positioned closer to the base 1390″ in theclosed or latched condition. Base 1390″, on the other hand, may includea substantially triangular or substantially trapezoidal protrusionextending from the base toward the cover 1380″. The top of thetriangular or trapezoidal protrusion may include a tip, which may berounded, extending therefrom. As is best shown in FIG. 24I, when thecover 1380″ is connected to the base 1390″, for example in a latchedcondition, the triangular or trapezoidal protrusion of the base 1390″ isreceived within the triangular recess of the cover 1380″, with the tipof the protrusion contracting O-ring 1399. The tip of the protrusion ofthe base 1390″ may act as a force concentrator on the O-ring 1399,facilitating a better seal between the cover 1380″ and the base 1390″.It should be understood that both the triangular-shaped recess of thecover 1380″ and the triangular shaped protrusion and tip of the base1390″ may extend across an entire circumference of the cover 1380″ andbase 1390″, or less than the entire circumference. Further, theconfiguration of the cover 1380″ and base 1390″ shown in FIGS. 24H-I maybe incorporated into any of the covers and bases described herein asbeing capable of latching to one another, and any of the latchmechanisms described herein may be used with the cover 1380″ and base1390″ of FIGS. 24H-I.

FIGS. 24J-K are cross-sections of a cover 1380′″ and a base 1390′ thathave connection features that are generally reversed compared to cover1380″ and base 1390″ of FIGS. 24H-I. In other words, base 1390′ mayinclude a substantially triangular recess for receiving a gasket orO-ring 1399 and a protrusion and tip of cover 1380′. Cover 1380′″ mayinclude a substantially triangular or substantially trapezoidalprotrusion with a tip that acts as a force concentrator on O-ring 1399when the cover 1380′″ is latched or otherwise coupled to base 1390′″. Itshould be understood that, other than the reversal of these interactingstructures, the description of cover 1380″ and base 1390″ above fullyapplies to cover 1380′″ and base 1390′″ of FIGS. 24J-K.

FIG. 24L is a perspective view of a cover 1380″″ and base 1390″″ thatare similar to those described above, with latch mechanisms that areseparately applied to the cover and base. For example, whereas cover1380 of FIGS. 24F-G is shown as including an integral upward facing hook1381 for engagement with a latching mechanism, cover 1380″″ includes aplurality of cover latch portions CL coupled to the cover, each coverlatch portion CL including an upward facing hook 1381″″ that may besimilar in shape and purpose to upward facing hook 1381 of FIGS. 24F-G.In the illustrated embodiment, a plurality of individual cover latchportions CL are coupled near the bottom of cover 1380″″ at spacedlocations around the circumference of the cover 1380″″. Similarly, base1390″″ may include a plurality of base latch portions BL coupled to thebase 1390″″ at spaced locations around the circumference thereof. Eachbase latch portion BL may be similar in structure and function to thelatches on the base of 1390 described in connection with FIGS. 24F-G.For example, each base latch portion BL may include a U-shapedengagement arm 1384″″ operatively coupled to a lever 1383″″, where thelever 1383″″ is rotated to engage and/or lock the U-shaped engagementarm 1384″″ to a corresponding upward facing hook 1381″″ to draw thecover 1380″″ toward and into sealing engagement with the base 1390″″. Asnoted above, it should be understood that the functional aspects of thelatching mechanism illustrated in FIG. 24L may be identical orsubstantially similar to the latching mechanism described in connectionwith FIGS. 24F-G, and the base and cover of FIG. 24L may include any ofthe O-ring and/or gaskets described in connection with FIGS. 24C, 24H,and/or 24 I. A main difference of the latching mechanisms of FIG. 24L isthat the cover latch portions CL and base latch portions BL areseparately attached to the cover 1380″″ and the base 1390″″,respectively, for example by screws, bolts, adhesives, or any othersuitable mechanism. With this variation, it is possible to form thecover latch portions CL and base latch portions BL of any desiredmaterial, regardless of the materials forming cover 1380″″ and base1390″″. For example, base 1390″″ and cover 1380″″ may be formed of aplastic, such as a hard plastic such as polyethylene, or even a softplastic or a metal. In one embodiment, cover latch portions CL and baselatch portions BL are formed of a rigid material such as a metal. Incertain configurations above, the act of operating one or more latchmechanisms to draw the cover to the base may result in some amount ofdeflection in the portions of the cover and/or base at or adjacent thelatch. However, in the example of FIG. 24L in which the cover latchportions CL and base latch portions BL are formed of a metal, the cover1380″″ and/or base 1390″″ are less likely to deform, such thatdeformation is less or effectively eliminated, because of the metallicor otherwise rigid structure of the cover latch portions CL and baselatch portions BL. In one embodiment, in order to minimize the amount ofdeflection, cover latch portions CL and base latch portions BL may havea predetermined width, so that in the aggregate, the plurality of coverlatches CL extends along a substantial percentage of a circumferentialportion of the cover 1380″″ near its bottom, while the plurality of baselatches BL extends along a substantial percentage of a circumferentialportion of base 1390″″ near its top. In some examples, cover latchportions CL and base latch portions BL extend, respectively, along atleast 80%, or at least 90% of the circumferential portions of the cover1380″″ and base 1390″″. FIG. 24M shows an embodiment in which a coverlatch portion CL and a base latch portion BL extend respectively along100% of circumferential portions of the cover 1380″″ and base 1390″″,with the cover, base, and latching mechanisms otherwise being identicalto that shown in FIG. 24L. In other words, cover latch portion CL ofFIG. 24M is a continuous structure that extends around the entirecircumference of cover 1380″″ while base latch portion BL is acontinuous structure that extends around the entire circumference ofbase 1390″″. This configuration, compared to the configuration of FIG.24L, may be more simple from a manufacturing and attachment standpoint,and may also further reduce the likelihood of extent of any deflectionof the cover 1390″″ and/or base 1390″″ when using the latch mechanism todraw the cover toward the base.

In some embodiments, the draw latches described above may be eliminatedentirely and separate mechanisms for sealing and/or locking cover 1380to base 1390 may be provided. For example, FIG. 24N illustrates anembodiment in which there are no draw latches, but rather fasteners Fare provided coupled to cover 1380 to securely attach the cover 1380 tothe base 1390. As shown in FIGS. 24N-O, a top portion 1306 of frame 1302may include one or more apertures that align with apertures in cover1380 when cover 1380 is coupled to base 1390. In the illustratedembodiment, two fasteners F are included with cover 1380. When cover1380 is slid over frame 1302, the top portion 1306 of frame 1302 mayguide the cover 1380 similar to the description in connection with FIGS.22A-B. As the top of the cover 1380 nears the top portion 1306 of theframe 1302, as shown in FIG. 24O, apertures in the cover 1380 align withcorresponding apertures in the top portion 1306 of frame 1301. At thispoint, fasteners F (which may be passed partially through cover 1380 asit is placed over the frame 1302) may be rotated to draw the cover 1380into base 1390. In the illustrated example, fasteners F are bolts thatmay thread directly into the top portion 1306 of frame 1302, or intonuts or other receiving structures coupled to the top portion 1306 offrame 1302. However, it should be understood that the fasteners F mayhave suitable forms other than bolts, and although two fasteners F areshown, a single fastener may be used, or more than two fasteners may beused. Further, although FIG. 24O illustrates a gasket 1399 having aconfiguration similar to that of FIGS. 24J-K, it should be understoodthat other configurations may be suitable, such as that shown in FIGS.24H-I or that shown in FIG. 24C. In any event, using fasteners F to drawthe cover 1390 toward base 1380 preferably results in a tight sealbetween the cover and the base, without the need for any of the types oflatch mechanisms described above in connection with FIGS. 24A-M. Itshould further be understood that other components of the system,including portions of the communication system that would reside withinframe 1302, are omitted from the view of FIGS. 24N-0 to better and moreclearly illustrate the mechanism for securing the cover 1380 to the base1390 in a sealed condition.

FIG. 25A shows patch panel system 1300 in the same view as FIG. 20A withan additional accessory member for maintaining the hanger plates 1321 a,1321 b in the maintenance condition during maintenance of cables C. Theaccessory member may include a first bar 1500 a attached to an innersurface of hanger plate 1321 a near the hinge on the side wall 1304 ofthe frame 1302, and a second bar 1500 b attached to an inner surface ofhanger plate 1321 b near the hinge with the other side wall 1304 of theframe 1302. It should be understood that, in the view of FIG. 25A,second bar 1500 b is mostly blocked from view by hanger plate 1321 b andis thus shown in dashed lines. In a stored condition of the bars 1500 a,1500 b, each bar may extend from a bottom to a top of the correspondinghanger plate 1321 a, 1321 b, the bars in the stored condition allowingthe hanger plates to freely open or close. The first bar 1500 a may beconnected to the hanger plate 1321 a by a hinge 1510 a at one of the topand bottom of the bar 1500 a, and the second bar 1500 b may be connectedto hanger plate 1321 b by a hinge 1510 b at the other of the top and thebottom of the bar 1500 b, such that the two bars 1500 a, 1500 b arehinged at opposite ends of the respective bars. When the hanger plates1321 a, 1321 b are opened, the user may swing both bars 1500 a, 1500 babout their hinges 1510 a, 1510 b, as shown in FIG. 25B. With the bars1500 a, 1500 b rotated about their respective hinges 1510 a, 1510 b to amaintenance condition, the bars 1500 a, 1500 b may prevent the hangerplates 1321 a, 1321 b from closing unintentionally. Preferably, bars1500 a, 1500 b remain in a given position (i.e. stored position,maintenance position) in the absence of applied force, so that the barsdo not move, i.e., swing, due to gravity in the absence of anintentional force applied by a user.

In the stored condition of the bars 1500 a, 1500 b, the bars may overlieone or more cables C such that a user may be required to swing the barsto the maintenance condition in order to perform maintenance. This mayprovide a safety condition that the user is forced to initiate prior tobeing able to perform maintenance. Cables C passing behind bar 1500 aare shown in FIG. 25A. FIG. 25C shows a top view of patch panel system1300 with the bars 1500 a, 1500 b in the stored condition and the hangerplates 1321 a, 1321 b in both the installed (closed) and maintenance(open) conditions for comparison. The fact that the bars 1500 a, 1500 bmay overlie cables C when the bars are in the stored position is alsoillustrated in FIG. 25C. The bars 1500 a, 1500 b may have various shapesand preferably are rigid enough to prevent the hanger plates 1321 a,1321 b from unintentionally closing when the bars 1500 a, 1500 b arerotated about their hinges 1510 a, 1510 b and the hanger plates of thepatch panel system 1300 is in the maintenance condition. The bars 1500a, 1500 b may be substantially cylindrical, which may provide that aminimum bending radius is maintained for the cables C when the bars 1500a, 1500 b overlie the cables C and the patch panel system 1300 is in thestored condition. A cylindrical shape of bar 1500 a is illustrated inFIG. 25D. However, as noted above, other shapes may be suitable,particularly ones that provide for a minimum bending radius to bemaintained for cables C. For example, FIG. 25D illustrates an alternateshape for a bar 1500 a′ that may be used as an alternative to thecylindrical shape of bar 1500 a. As illustrated, bar 1500 a′ includes anouter arcuate surface, the outer arcuate surface intended to contactcables C to maintain a minimum bending radius of the cables. It shouldbe understood that a bar having an arcuate shape, such as bar 1500 a′,may be used in place of bar 1500 b as well. Still further, it should beunderstood that the bars 1500 a, 1500 b may be attached to the frame1302 instead of the hanger plates 1321 a, 1321 b. For example, a bracketwith a hinge may be mounted on each side wall 1304 of frame 1302 nearopposite corners of the front open face of the frame 1302, one barattached to each bracket. However, other attachment methods are withinthe scope of this disclosure.

FIG. 26A shows patch panel system 1300 with an accessory in the form ofa water sensor system 1600. When used with water sensor system 1600, theside walls 1304 of frame 1302 may extend a farther distance below bottomportion 1308 of frame 1302 in order to create a recessed space betweenthe bottom portion 1308 of the frame 1302 and the base 1390 and in whichthe water sensor system 1600 is disposed. Water sensor system 1600 maybe part of an optical time domain reflectometer (“ODTR”) system, andconfigured to include an optical fiber cable 1610 extending along anominal axis A between at least one pair of sponges 1620 or otherwater-absorbing structures. The cable 1610 may be part of the system1600 and configured for coupling to another cable supplied from externalthe system 1300, or be an optical fiber cable supplied from external thesystem 1300. It should be understood that only a portion of cable 1610is shown in FIGS. 26A-C, and cable 1610 may connect to other portions ofan OTDR system as known in the art. In the illustrated embodiment, eachsponge 1620 includes a rear portion facing away from cable 1610 and afront portion facing cable 1610, where the front portion includes arounded forward-most portion 1621.

In a dry state of the water sensor system 1600, as shown in FIGS.26A-26B, the cable 1610 may extend along the nominal axis A between thedry sponges 1620, where the forward-most portions 1621 of the spongesface the nominal axis, and are in contact with or directly adjacent thecable 1610, such that cable 1610 extends substantially straight alongthe nominal axis. If water enters into the patch panel system 1300, forexample during a flooding event, the sponges 1620 may absorb water andexpand in size, as shown in FIG. 26C. It should be understood that forsimplicity of illustration, only two sponges 1620 are shown in FIG. 26C.As shown in FIG. 26C, the expansion in size of the sponges 1620 maycause the forward-most portions 1621 of the sponges 1620 to extendbeyond the nominal axis A, so as to contact and push cable 1610 awayfrom the nominal axis, with adjacent sponges pushing the cable 1610 inopposite directions, causing the cable 1610 to bend at the sponges 1620,such that an optical signal passing through the cable 1610 may bepartially attenuated or completely interrupted at the bent cableportions. As should be understood, two, three, or more sponges may beused in such a sensor system, preferably with at least two adjacentsponges 1620 positioned on opposite sides of cable 1610. The partialattenuation or complete interruption of an optical signal carried bycable 1610 may be detected by the OTDR system which may indicate to auser that damage has occurred in a particular patch panel system 1300 ata particular location. Thus, water sensor system 1600 may help diagnoseproblems in patch panel systems, and may assist in identifying theparticular patch panel system 1300 from a group of patch panel systemsthat has encountered a flooding event or other water event. FIG. 26Cillustrates that one or more guides 1630 may also be included in watersensor system 1600. Cable 1610 may extend along one or more guides 1630such that, upon expansion of one or more sponges 1620, the cable 1610 ismore likely to bend in a desired manner to cause signal disruption orinterruption.

FIG. 27A shows a patch panel system 1300′ according to another aspect ofthe disclosure. Patch panel system 1300′ may include a first patch panelsystem 1300 a′, and a second patch panel system 1300 b′, which may eachbe similar or identical to one another and similar or identical to patchpanel system 1300 described above. Similar or identical components ofpatch panel systems 1300 a′ and 1300 b′ are not described in additionaldetail here, as they have been described above in connection with patchpanel system 1300. Patch panel systems 1300 a′ and 1300 b′ may bepositioned back to back with a rear face of the rear cartridge of eachpatch panel system 1300 a′ and 1300 b′ facing one another. Cables C′from one of the patch panel systems 1300 a′ may be connected to theother patch panel system 1300 b′ (and vice versa) to effectively doublethe capacity of the combined patch panel system 1300′ compared to asingle patch panel system 1300. In one example, as shown in FIG. 27A,cables C′ at first patch panel system 1300 a′ may extend through a sidepath between a hanger plate and the frame, along a side hanger and thento the adjacent second patch panel system 1300 b′. In anotherembodiment, the cable(s) C′ may extend over the frame of one patch panelsystem 1300 a′ to the adjacent second patch panel system 1300 b′. FIG.27B shows the hanger assemblies of patch panel system 1300′ of FIG. 27Ain an installed condition. As shown, both patch panel systems 1300 a′,1300 b′ may be attached to a single base 1390′, which may be similar tobase 1390 in most respects other than the size and the shape of the base1390′ which may be configured to receive two patch panel systems 1300a′, 1300 b′ compared to base 1390 which may be configured to receive asingle patch panel system 1300. Similarly, patch panel system 1300′ maybe covered by a single cover 1380′, which may be used to cover bothpatch panel systems 1300 a′ and 1300 b′ simultaneously. Cover 1380′ maybe similar or identical to cover 1380 in all respects other than thesize and shape, as cover 1380′ is configured to overlie two patch panelsystems 1300 a′, 1300 b′ while cover 1380 is configured to overlie asingle patch panel system 1300. For example, cover 1380′ may include twopairs of internal guide slots instead of a single pair of guide slots1382 as may be provided with cover 1380. In the embodiment of patchpanel system 1300′ illustrated in FIG. 27B, the patch panel system 1300′is supported on a shelf 1700 that may slide relative to a structure towhich the shelf is attached. The shelf 1700 may take the form of a mountbracket 1710 that includes a sliding shelf member 1720 that slides withrespect to the mount bracket 1710. In some embodiments, base 1390′ maybe rotatably mounted on shelf member 1720 so that base 1390′ may rotatedwith respect to shelf member 1720. As illustrated, both base member1390′ and shelf member 1720 include substantially flat surfaces thatremain parallel to one another during rotation. The rotation may haveany desired range, for example up to 90 degrees in one direction, or upto 90 degrees in two directions for a total of 180 degrees of rotation,although more or less rotation may be provided as desired. Mount bracket1710 may be mounted or otherwise fixed to any suitable supportstructure, such as a pole 1730. As noted above in connection with FIGS.19C-D and 20C-D, the rear cartridges of patch panel systems 1300 a′ and1300 b′ may rotate or slide in a single plane to the left or the rightso that the cartridge generally remains parallel to the rear face of therespective patch panel system 1300 a′ or 1300 b′. Other types ofrotation of the rear cartridges of patch panel systems 1300 a′ and 1300b′ may otherwise be precluded since the rear cartridges might not haveclearance to rotate away from the rear face of the particular patchpanel system.

FIG. 28A illustrates two cassettes 1310 a, 1310 b of patch panel system1300 of FIGS. 19A-20D, although similar concepts may be applied to otherpatch panel systems described herein. The first cassette 1310 a mayreceive an input cable 1800, for example from a service provider, whichis coupled to a splitter module 1810. The splitter 1810 may split thesignal(s) supplied from the input cable 1800 among a plurality of cables1820. The cables 1820 may exit the splitter module 1810 and be routed toterminate at connectors 1830, each individual connector 1830 beingpositioned in a storage rack 1840. The storage rack 1840 may function toorganize the cables 1820 exiting the splitter module 1810 which arerouted to the individual cassette. In one embodiment, when an operatordesires to connect one of the cables 1820 exiting the splitter module1810 to a service subscriber, the connector 1830′ of a cable 1820′ maybe removed from the storage rack 1840 and coupled to a connector 1850within a separate cassette 1310 b of the patch panel system 1300′,resulting in the service subscriber being connected to the serviceprovider via a cable 1860 and a corresponding cable 1820′. It should beunderstood that, in FIG. 28A, cables 1820 and cable 1820′ (as well asconnectors 1830 and connector 1830′) may be identical in structure andfunction, with the different designation referring only to the fact thatthe cable is in a stored condition (1820, 1830) or in a connectedservice providing condition (1820′, 1830′). The cable storage rack 1840may be removable from cassette 1310 a such that, after all of the cables1820′ exiting the splitter module 1810 are coupled to connectors 1850within patch panel cassette 1310 b (or another similar cassette) toconnect service subscribers to the service provider, the cable storagerack 1840 may be physically removed from the cassette 1310 a since nomore cables 1820 are stored on the cable storage rack 1840. FIGS. 28Band 28C illustrate an exemplary embodiment of the cable storage rack1840. In particular, FIG. 28B illustrates an isolated view of theconnector 1830 of a cable 1820, which may include a strain relief suchas a “boot” 1832 and a connector cap 1834, positioned adjacent the cablestorage rack 1840, and FIG. 28C illustrates the boot 1832 of the cable1820 stored within the cable storage rack 1840. The cable storage rack1840 may include a plurality of resting spaces 1842 bounded by pairs ofadjacent walls 1844 that can deflect to allow the boot 1832 of theconnector 1830 to be securely stored within the cable storage rack 1840.If a cable boot 1832 is stored within one slot 1842 in the cable storagerack 1844, deflection of one or both adjacent walls 1844 may berestricted when a cable boot 1832 is snapped into an adjacent slot 1842.FIG. 28D illustrates another embodiment of a cable storage rack 1840′that staggers positioning of adjacent individual slots 1842 a′ and 1842b′ alternating in two rows, where each slot 1842 a′ and 1842 b′ hasrespective slot walls 1844 a′ and 1844 b′, the slots 1842 a′, 1842 b′ ofeach row being spaced apart from adjacent slots 1842 a′, 1842 b′ in thesame row so that the walls 1844 a′, 1844 b′ are able to freely deflect,regardless of whether a cable boot 1832 is stored within an adjacentcable slot 1842 a′, 1842 b′ in the same row. It should be understoodthat a plurality of splitter cassettes 1310 a and a plurality of fiberdistribution cassettes 1310 b may be included in patch panel system1300. For example, the top or bottom half of patch panel system 1300 mayinclude splitter cassettes 1310 a, and the other of the top or bottomhalf of patch panel system 1300 may include fiber distribution cassettes1310 b. This configuration may help better organize the cables enteringand exiting the patch panel system 1300, as well as cables connectingsplitter cassettes 1310 a to fiber distribution cassettes 1310 b.However, it should be understood that the cassettes 1310 need to beexactly arranged this way, and modifications may be suitable.

FIG. 28E illustrates a plurality of splitter modules 1810 in a stackedconfiguration, in accordance with an aspect of the present disclosure.Although the stacked configuration of the splitter modules 1810 isdescribed below with reference to an exemplary embodiment of beingprovided on a splitter cassette 1310 a similar to that shown in FIG.28A, it should be understood that the construction and features of thestacked configuration of modules 1810 may be used in anotherimplementation associated with optical fiber routing and management.Referring to FIG. 28E, each splitter module 1810 may include a pluralityof individually sheathed cables 1820 that each terminate in a connector1830, similar to that shown in FIG. 28A. FIG. 28E illustrates that, whenan optical fiber distribution and routing implantation includes aplurality of stacked splitter modules 1810 that each include a pluralityof individually sheathed cables 1820 that may be connected to any one ofa plurality of connectors (such as connectors 1850 of any one of a groupof stacked fiber distribution cassettes 1310 b shown in FIG. 28A),congestion and/or tangling of cables 1820 may become a problem. In theexample of FIG. 28E, each cable 1820 may have a cable jacket or sheathforming an exterior of the cable and housing an individual fiber, wherean outer diameter of the cable at the exterior surface of the jacket orsheath is between about 0.9 mm and about 1.6 mm.

FIG. 28F illustrates a plurality of splitter modules 1810′ in a stackedconfiguration similar to FIG. 28E with at least one distinction. Inparticular, whereas splitter module 1810 includes a plurality ofindividual cables 1820 each containing therein, within the sheath orouter jacket of the cable, an individual fiber extending out of thesplitter module 1810, each splitter module 1810′ may include an outputcable 1811′ extending therefrom, where the output cable 1811′ houseswithin its sheath or outer jacket a plurality of individual fibers 1812′(see FIG. 28G). For example, if each splitter module 1810 includesthirty-two individual cables 1820 extending therefrom, with each cablehousing a single fiber, each splitter module 1810′ may include an outputcable 1811′ exiting the splitter module 1810′, the output cable 1811′housing thirty-two fibers 1812′. Referring now to FIGS. 28F and 28G, theoutput cable 1811′ may terminate in a coupling 1813′. Each individualfiber 1812′ may exit cable 1811′ and enter an individual cable 1814′that begins at or within coupling 1813′. In other words, in one example,thirty-two individual fibers 1812′ may extend out of a splitter module1810′, with the thirty-two individual fibers being housed within asingle output cable 1811′. At the coupling 1813′, each individual fiber1812′ may exit the output cable 1811′, and may each enter acorresponding individual cable 1814′, the individual fibers 1812′ beingcontinuous through the coupling 1813′. Each individual fiber 1812′ andcorresponding individual cable 1814′ may terminate in a connector 1830,which may be similar to other connectors described herein.

It should be understood that coupling 1813′ may have any suitableconfiguration. For example, although FIG. 28G illustrates coupling 1813′as being substantially cylindrical with a first end overlying a terminalend of output cable 1811′, coupling 1813″ may have other shapes and theterminal end of output cable 1811′ may overlie one end of coupling1813′. In one example, the terminal end of output cable 1811′ mayoverlie a first end of coupling 1813′, and the coupling 1813′ may extendto a second end that is the same size as or larger in size than itsfirst end. Still further, although FIG. 28G shows three fibers 1812′entering terminal ends of three corresponding individual cables 1814′within coupling 1813′, it should be understood that any suitable numberof fibers 1812′ and respectively corresponding individual cables 1814′may be connected through coupling 1813′, such as, for example thirty-twofibers 1812′ that enter respectively thirty-two individual cables 1814′in coupling 1813′. Further, while FIG. 28G illustrates a retainer 1815′retaining terminal ends of individual cables 1814′ within coupling1813′, other mechanisms may be suitable to secure the terminal ends ofindividual cables 1814′ within coupling 1813′. For example, one or moreretainers 1815′ in the form of crimping members may secure the terminalend of output cable 1811′ in coupling 1813′ and/or the terminal ends ofindividual cables 1814′ within coupling 1813′.

FIG. 28H is similar to FIG. 28F, and additionally shows inputs to thesplitter modules 1810′ and outputs of a patch panel. For example, aplurality of cables 1860 may exit each patch panel cassette 1310 b, insubstantially the same manner as shown and described in connection withFIG. 28A, the cables 1860 connecting to respective subscribers, forexample. One or more individual input cables 1816′, each containing atleast one optical fiber within a sheath or outer jacket, may be coupledto each splitter module 1810′ and route an incoming signal(s), such asfrom a service provider, into splitter module 1810′. FIG. 28Hillustrates three examples of input cables into splitter module 1810′.Two of the input cables 1816′ are substantially identical and illustratethat input cables may enter on different faces of splitter module 1810′.The two substantially identical input cables 1816′ extend to a connector1818′, such that the entirety of the input cable between connector 1818′and splitter module 1810′ is an individual cable, in other words, acable having a sheath or outer jacket housing an optical fiber or fiberstherein. However, in other embodiments, the input cable may beconfigured to fan out similar to the output cables of splitter module1810′. For example, FIG. 28H illustrates an individual input cable 1816′extending from splitter module 1810′ to a coupling 1819′, from which theinput cable 1816′ branches or fans out into two additional input cables1817′, each attached to a connector 1818′. This similarly allows forminimizing congestion of cables entering splitter module 1810′, so thateach point of entry into splitter module 1810′ is an individual cable1816′.

Referring still to FIG. 28H, it should be understood that the totalnumber of individual cables 1811′ preferably is always smaller than thetotal number of individual cables 1814′ extending therefrom. Further, atransverse cross-sectional area (CA) of an individual cable 1811′ asdefined by an outer perimeter surface of the cable preferably is alwayssmaller than the sum (CA-sum) of the transverse cross-sectional areas asrespectively defined by an outer perimeter surface of each of theindividual cables 1814′ extending therefrom. The difference between theCA and the CA-sum distinguishes the present disclosure from aconventional implementation in which, for example, a given number ofcables extends between two ports or connectors, and a portion of thosecables is covered with a jacket or other covering, where the coveredportion would necessarily have a cross-sectional area as defined by anouter perimeter surface of the cable at the covered portion greater thanthe sum of the cross-sectional area as defined by an outer perimetersurface of the individual cables. In some embodiments, each individualcable 1811′ may be substantially circular and have a diameter of betweenabout 2 mm and about 5 mm, but it should be understood that other shapesand sizes may be suitable for the cables 1811′. For example, theindividual cable 1811′ may be a ribbon cable or substantially flatshape. The individual cables 1814′ may each be substantially circularand may each have a diameter of between about 0.9 mm and about 1.6 mm,although other shapes and sizes may be suitable for the individualcables 1814′. Regarding the input cables, it should be understood thatthe total number of individual input cables 1816′ is preferably alwaysless than or equal to the number of corresponding connectors 1818′. Inother words, the number of input cables 1816′ may be equal to the numberof connectors 1818′ when there are no branches 1817′ present. Otherwise,if branches 1817′ are present, the number of total branches 1817′ (aswell as the number of total connectors 1818′) must be greater than thenumber of individual input cables 1816′. It should be understood that,using this terminology, a single input cable 1816′ that extends to aconnector 1818′ without branching would be classified as having a single“branch.” Further, in a system similar to that shown in FIG. 28H, thetotal number of branches 1817′ (as well as the total number ofconnectors 1818′) preferably is always less than the total number ofindividual cables 1814′.

Although FIGS. 28F-H illustrate specific embodiments incorporatingcertain features to help manage cable congestion in a system in whichone or more splitter module 1810′ are provided to couple to ports ofpatch panel cassettes 1310 b of a fiber distribution hub, it should beunderstood that other configurations are possible. For example, thesplitter modules 1810′ need not be used to connect cables to ports ofpatch panel cassettes 1310 b in a fiber distribution hub, but rather maybe used to connect cables from one or more splitter modules 1810′ to anydesired device while reducing cable congestion. Similarly, the outputcables 1811′ may be provided without the particular input cables 1816′of FIG. 28H, and the input cables 1816′ may be provided without theparticular output cables 1811′ of FIG. 28H. Further, while FIG. 28Fillustrates that an output cable 1811′ may be coupled to each individualsplitter module 1810′, more than one output cable 1811′ may be coupledto each individual module 1810, for example the two output cables 1811′coupled to the top-most splitter module 1810′ in the stack as shown inFIG. 28H. Still further, while all of the fibers 1812′ output from anindividual splitter module 1810′ may pass through one output cable1811′, in other embodiments one group of fibers 1812′ may pass through afirst output cable 1811′ while a second group of fibers 1812′ may passthrough a second output cable 1811′. For example, if a splitter module1810′ includes thirty-two output fibers 1812′, all thirty-two outputfibers 1812′ may be routed through a single output cable 1811′, or inthe alternative two groups of sixteen fibers 1812′ may each be routedthrough two different output cables 1811′. It is preferable that in allcases, including the alternative examples described above, therelationships described above still apply. For example, in the casewhere two groups of sixteen fibers 1812′ extend through two outputcables 1811′, and then each group extends through a correspondingcoupling 1813′ to two corresponding groups of sixteen individual cables1814′, each group of sixteen individual cables 1814′ has a cumulativetransverse cross-sectional area that is greater than the transversecross-sectional area of the corresponding output cable 1811′. Stillfurther, while FIG. 28A shows that a splitter cassette 1310 a mayinclude a single splitter module 1810, it should be understood thatadditional splitter modules 1810 may be provided on a single splittercassette 1310 a. One or more splitter modules 1810′ described inconnection with FIGS. 28F-H may similarly be provided on splittercassettes, including one or more splitter modules 1810′ per splittercassette.

FIGS. 29A-B show patch panel system 1300 with an accessory in the formof a recording sheet 1900. Patch panel system 1300 is not described ingreater detail below with the exception of the recording sheet 1900.However, it should be understood that recording sheet 1900 or a similaraccessory may be used in conjunction with other patch panel systemsdescribed herein. The hanger plates 1321 a, 1321 b of patch panel system1300 are shown in an open or maintenance condition in FIGS. 29A-29B,with recording sheet 1900 shown in a stored condition in FIG. 29A and anoperable condition in FIG. 29B. Recording sheet 1900 may take the formof a rectangular-shaped sheet, such as a plastic sheet, and includepaper or a paper-like material on a face of the sheet that can berecorded on, for example by pen or pencil. In the illustratedembodiment, recording sheet 1900 has a lateral edge that is hingedlycoupled to a free edge of hanger plate 1321 b. However, it should beunderstood that recording sheet 1900 may instead be provided on hangerplate 1321 a. Similarly, two recording sheets 1900 may be provided, oneon each hanger plate 1321 a, 1321 b. Recording sheet 1900 may includeindicia 1910 on at least one face thereof, the indicia 1910 providinginformation to the user to assist in maintenance of patch panel system1300. For example, indicia 1910 may include one or more connectiondiagrams. Further, indicia 1910 may include spaces on which the user mayrecord information regarding patch panel system 1300 during or aftermaintenance, for example to provide a record for later reference.Although recording sheet 1900 is illustrated as having a lateral edgehingedly coupled to a free edge of hanger plate 1321 b, it should beunderstood that a top edge of recording sheet 1900 may be hingedlycoupled at a top edge of the frame or inner chassis of patch panelsystem 1300 so that it folds upward to the operable condition, orotherwise a bottom edge of recording sheet 1900 may be hingedly coupledat a bottom edge of the frame or inner chassis of patch panel system1300 so that if folds downward to the operable condition.

Patch panel systems 1200 and 1300 may be particularly well suited forapplications in which environmental concerns, and in particularwater-tight sealing, are of particular importance. However, in otherapplications in which patch panel systems may require less weatherprotection and/or less than water-tight sealing, patch panel systems maybe used without separate covers. For example, FIG. 30A shows a patchpanel system 2000 with hanger plates 2021 a, 2021 b in an installed orstored condition in accordance with another embodiment of thedisclosure. FIG. 30B shows the hanger plates 2021 a, 2021 b of patchpanel system 2000 in an open or maintenance condition. Patch panelsystem 2000 may include a housing or frame, which in the illustratedembodiment is substantially rectangular with side walls 2004, which mayinclude ports for incoming and outgoing cables (or cable bundles) C. Itshould be understood that cables C may be positioned within sheaths orother protective members that couple to or enter the ports in the sidewalls 2004, and it should be understood that more or fewer ports may beprovided, and the ports may be positioned on different portions of thehousing than side walls 2004. The ports of patch panel system 2000 maybe similar to other ports described herein. A top wall 2006 of the framemay include one or more hanging elements 2007 coupled thereto. In theillustrated embodiment, two hanging elements 2007 each have a first endcoupled to top wall 2006 and a second end coupled to a rear wall of thehousing. However, it should be understood that one or more than twohanging elements 2007 may be provided, and the hanging elements may becoupled to other portions of the housing of patch panel system 2000. Inthe illustrated embodiment, the hanging elements 2007 each form a closedboundary with the housing so that a wire W may pass through the closedboundaries and the patch panel system 2000 may hang from the wire W viathe hanging elements 2007. Hanging elements 2007 may be rigid and formedof similar materials as the housing of patch panel system 2000, forexample a metal that may be used to ground the system 2000. In otherembodiments, hanging elements 2007 may be straps or other soft materialsthat provide sufficient strength to support patch panel system 2000while it hangs from wire W. In still other embodiments, hanging elements2007 need not be coupled on two ends to the housing of patch panelsystem 2000. For example, hanging elements 2007 may have a first endcoupled to the housing of patch panel system 2000 and a second free endshaped to hook over wire W, or to otherwise be secured to wire W.

In the open or maintenance condition of the hanger plates 2021 a, 2021 bof system 2000, as shown in FIG. 30B, a plurality of cassettes 2010 maybe accessible, the cassettes 2010 being in a vertically stackedconfiguration in a manner substantially similar or identical to patchpanel systems 1200, 1300. As cassettes have been described in connectionwith other embodiments above, cassettes 2010 are not described inadditional detail here. In the closed or installed condition of hangerplates 2021 a, 2021 b, as shown in FIG. 30A, hanger plates 2021 a, 2021b may cover and/or enclose cassettes 2010 in conjunction with otherportions of the housing of patch panel system 2000. Hanger plates 2021a, 2021 b may be substantially similar or identical to hanger plates1321 a, 1321 b, and are not described in significant additional detailbelow other than to describe certain possible differences. For example,hanger plates 2021 a, 2021 b may include hangers and cable retainers oninterior walls similar or identical to embodiments described above inorder to help organize and route cables within patch panel system 2000.While hanger plates 1321 a, 1321 b may include windows and otherrecesses to facilitate passing cables from inside the frame 1302 toareas outside the frame (but still within cover 1380), it may bepreferable that hanger plates 2021 a, 2021 b do not include suchrecesses or windows. The omission of such windows or recesses may helpprotect the interior of the patch panel system 2000, as patch panelsystem 2000 may be used without additional covers. Also, similar topatch panel system 1300, it may be preferable for hanger plates 2021 aand 2021 b to be constructed so that hanger plate 2021 b is positionednearer cassettes 2010 when the hangers of patch panel system 2000 are inthe closed or installed condition, with hanger plate 2021 a facing theoutside environment in the closed or installed condition. It may bepreferable for hanger plate 2021 a to include lips or other features onthe edges of the hanger plate 2021 a so that, in the closed or installedcondition, hanger plate 2021 completely or substantially completelyencloses hanger plate 2021 b and forms a complete or substantiallycomplete seal with the housing of patch panel system 2000. Hanger plate2021 a may also include one or more latches 2023 to help keep hangers2021 a, 2021 b in the closed or installed condition shown in FIG. 30A.In some examples, the housing of patch panel system 2000 may includelatch mechanisms or portions of a latch mechanism to interact with acorresponding latch mechanism on hanger plate 2021 a.

FIG. 31A shows a patch panel system 2000′ with a hanger plate 2021′ in aclosed or installed condition that is similar to patch panel system 2000in most respects, with one main difference being that patch panel system2000′ has a hanger plate 2021′ that rotates in a vertical direction,downwardly to the maintenance condition (as shown in FIG. 31B), comparedto hanger plates 2021 a, 2021 b that rotate in a horizontal direction tothe maintenance condition. However, it should be understood that the“vertical” and “horizontal” directions referenced above may be dependenton the installation context of the patch panel system. For example, thedifference in “vertical” rotation and “horizontal” rotation asreferenced above is intended to refer to when the patch panel systems2000, 2000′ are used in a hanging installation as shown in the figures.Patch panel system 2000′ may include a housing or frame, which in theillustrated embodiment is substantially rectangular with side walls2004′, which may include ports for incoming and outgoing cables (orcable bundles). It should be understood that cables may be positionedwithin sheaths or other protective members that couple to or enter theports in the side walls 2004′, and it should be understood that more orfewer ports may be provided, and the ports may be positioned ondifferent portions of the housing than side walls 2004′. The ports maybe partially formed in side walls 2004′ and partially formed in hangerplate 2021′. The ports of patch panel system 2000′ may be similar toother ports described herein. A top wall 2006′ of the frame may includeone or more hanging elements 2007′ coupled thereto. In the illustratedembodiment, two hanging elements 2007′ each have a first end coupled totop wall 2006′ and a second end coupled to a rear wall of the housing.However, it should be understood that one or more than two hangingelements 2007′ may be provided, and the hanging elements may be coupledto other portions of the housing of patch panel system 2000′. In theillustrated embodiment, the hanging elements 2007′ form a closedboundary with the housing so that a wire W may pass through the closedboundaries and the patch panel system 2000′ may hang from the wire W viathe hanging elements 2007′. Hanging elements 2007′ may be substantiallysimilar or identical to hanging elements 2007 and are not described ingreater detail herein.

In the open or maintenance condition of hanger plate 2021′, as shown inFIG. 31B, a plurality of cassettes 2010 a′, 2010 b′ may be accessible,the cassettes being in a vertically stacked configuration. In theillustrated embodiment, input cables 1800′ may enter one or morecassettes 2010 a′, which cassettes may include splitters similar to thatdescribed in connection with FIG. 28A. Cassettes 2010 a′ may bepositioned adjacent a second group of vertically stacked cassettes 2010b′, which may be distribution patch panels similar to cassettes 1310 bof FIG. 28A. Cables 2020′ may couple ports within cassettes 2010 a′ toports in cassettes 2010 b′, with output cables 1860′ extending fromcassettes 2010 b′ to individual subscribers, similar to theconfiguration of FIG. 28A. In the closed or installed condition ofhanger plate 202 a′, as shown in FIG. 31A, hanger plate 2021′ may coverand/or enclose cassettes 2010 a′, 2010 b′ in conjunction with otherportions of the housing of patch panel system 2000′. Hanger plate 2021′may include a plurality of hangers, similar to other hangers describedherein, in one or more vertically stacked groups in order to helporganize and guide cables within patch panel system 2000′. Preferably,hanger plate 2021′ does not include windows or other recesses, similarto hanger plates 2021 a, 2021 b. While hanger plates 2021 a, 2021 b arecoupled to their housing via hinges on side walls 2004 of patch panelsystem 2000, hanger plate 2021′ is preferably hingedly coupled to abottom surface of the housing of patch panel system 2000′, so that thetop of hanger plate 2021′ may rotate downward and away from the front ofthe patch panel system 2000′ to transition from the installed conditionto the maintenance condition. Hanger plate 2021′ may also include one ormore latches 2023′ to help keep hanger plate 2021′ in the closed orinstalled condition shown in FIG. 31A. In some examples, the housing ofpatch panel system 2000′ may include latch mechanisms or portions of alatch mechanism to interact with a corresponding latch mechanism 2023′on hanger plate 2021′. It should be understood that, although system2000′ is shown with two groups of vertically stacked cassettes 2010 a′,2010 b′, system 2000′ could instead include cassettes in a configurationsimilar to cassettes 2010 of system 2000, or cassettes in configurationssimilar to other embodiments of patch panel systems described herein.Patch panel system 2000″, shown in FIG. 31C with hanger plate 2021″ inan open or maintenance condition, may be similar or identical to patchpanel system 2000′ in all respects other than the configuration ofcassettes therein. For example, whereas system 2000′ includes a firstgroup of vertically stacked cassettes 2010 a′ horizontally adjacent asecond group of vertically stacked cassettes 2010 b′, system 2000′ mayinclude a first group of horizontally stacked cassettes 2010 a″positioned horizontally adjacent a second group of horizontally stackedcassettes 2010 b″. Otherwise, cassettes 2010 a″ may be functionallysimilar to cassettes 2010 a′ and cassettes 2010 b″ may be functionallysimilar to cassettes 2010 b′. It should be understood that for bothpatch panel system 2000′, as well as other patch panel systems describedherein, when hanger plate 2021′ is in the maintenance condition shown inFIG. 31B, cables extending from cassettes 2010 a′, 2010 b′ may remainpositioned on an interior surface of the hanger plate, for examplemaintained on hangers or other cable-holding or cable-organizingstructures.

FIG. 32A shows an embodiment of a patch panel system 2100 that issimilar to patch panel system 1300 in most respects, but is designed forhanging from a wire W similar to the patch panel systems of FIGS.30A-31C. For example, patch panel system 2100 may include a frame and/orinternal chassis similar or identical to the frame and/or internalchassis of patch panel system 1300, which may be coupled to a base 2190similar or identical to base 1390. In addition, patch panel system 2100may include a cover 2180 that is similar or identical to cover 1380 ofpatch panel system 1300. Patch panel system 2100 may include any of theaccessories, such as latch mechanisms or water sensors, described inconnection with patch panel system 1300. The main difference betweenpatch panel system 2100 and patch panel system 1300 is that patch panelsystem 2100 may include one or more hanging elements 2107 a, 2107 b sothat patch panel system 2100 may be hung from a wire W. For example,hanging element 2107 a may be coupled to cover 2180, for example bypartially or completely circumscribing the cover and defining an openingbetween the cover and the hanging member 2107 a through which wire W mayextend. Hanging element 2107 b may be coupled to a terminal surface ofbase 2109 and form a closed boundary through which wire W may pass. Itshould be understood that hanging elements 2107 a, 2107 b may have othershapes and/or take other forms which allow cover 2180 and base 2190,respectively, to be suspended from wire W. Further, in the illustratedembodiment, the cassettes within patch panel system 2100 have the sameconfiguration as those shown in patch panel system 2000″, although itshould be understood that other cassette configurations described hereinmay replace the configuration shown in FIG. 32A. In some embodiments,one or both of cover 2180 and the internal chassis of patch panel system2100 may include or be operatively coupled to a device to limit theextent to which the cover 2180 may slide away from the base 2190. Forexample, cover 2180 may include an internal projection near its open endthat may contact an external projection near the top of the internalchassis so that cover 2180 is restricted from completely disengagingwith the internal chassis. Such a stopper or limiter structure may helpensure that the cover 2180 is able to be removed, such as by rotation orsliding, sufficiently such that the internal chassis may be fullyaccessed to perform maintenance, but still remains coupled to theinternal chassis so that the structures do not become completelydisengaged from one another.

FIG. 32B illustrates an embodiment of a patch panel system 2100′ that issimilar to patch panel system 2100 of FIG. 32A in many respects. Forexample, patch panel system 2100′ may include a frame and/or internalchassis similar or that of patch panel system 2100, which may be coupledto a base 2190′ similar or identical to base 2190. In addition, patchpanel system 2100′ may include a cover 2180′ that is similar oridentical to cover 2180 of patch panel system 2100. Patch panel system2100′ may include any of the accessories, such as latch mechanisms orwater sensors, described in connection with patch panel systems 1300 and2100. Although not illustrated in FIG. 32B, patch panel system 2100′ mayinclude one or more hanging elements similar or identical to hangingelements 2107 a, 2107 b of system 2100 so that patch panel system 2100′may be hung from a wire. In the illustrated embodiment, the cassetteswithin patch panel system 2100′ are arranged in a similar configurationto that shown in FIG. 31B. In other words, patch panel system 2100′ mayinclude two groups of vertically stacked cassettes positionedhorizontally adjacent one another. It should be understood that theterms “vertical” and “horizontal” as used in connection with FIG. 32Bare meant to provide clarity and it should be understood that the“vertical” and “horizontal” directions in practice may depend upon theorientation of the system 2100′ with respect to another object, such asthe ground or a wire from which the system hangs. In this particularembodiment, a first group of cassettes 2110 a′ is positioned adjacent asecond group of cassettes 2110 b′, with both groups of cassettes beingpositioned between top and bottom frame elements 2105′. Although theparticular use of the cassettes may vary, in the illustrated embodimentthe first group of cassettes 2110 a′ includes a plurality of splittercassettes as well as one or more cassettes adapted to receive a signalfrom a service provider, with these cassettes being linked to thesplitter cassettes via one or more cables. Further, in this particularembodiment, the second group of cassettes 2110 b′ includes a pluralityof cassettes adapted to convey a signal to a service subscriber. Asillustrated, as many as three groups of hanger assemblies 2120 a′, 2120b′ and 2120 c′ may be provided with patch panel system 2100′, althoughit should be understood that in other embodiments, more or fewer hangerassemblies may be provided.

Hanger assembly 2120 a′ may be positioned adjacent the first group ofcassettes 2120 a′ (to the left in the view of FIG. 32B) and may includeone hanger for each cassette, the hanger being positioned in alignmentwith a corresponding cassette near a proximal face thereof. Hangerassembly 2120 a′ may be adapted to support cables, for example cablesincoming from a service provider to the cassettes adapted to receive thesignal from the service provider, as well as cables connecting thecassettes adapted to receive the signal from the service provider tosplitter cassettes, which may all be in the first group of cassettes2110 a′. Hanger assembly 2120 b′ may be structurally similar oridentical to hanger assembly 2120 a′, and is positioned between thefirst group of cassettes 2110 a′ and 2110 b′, and adapted to supportcables connecting cassettes of the first group 2110 a′ to cassettes ofthe second group 2110 b′. Hanger assembly 2120 c′ may be structurallysimilar or identical to hanger assemblies 2120 a′ and 2120 b′, and ispositioned between the second group of cassettes 2110 b′ and the base2190′ (to the right in the view of FIG. 32B), and adapted to supportcables connecting the cassettes of the second group 211 b′ to servicesubscribers. It should be understood that cassettes of the first group2110 a′ and the second group 2110 b′ may be slid from a stored position(a distalmost position) to a maintenance position (a proximal position)after a user removes cover 2180′ and desires to perform maintenance onthe system 2100′, for example by connecting a cable from a splittercassette in the first group 2110 a′ to a cassette in the second group2110 b′ to connect a service subscriber to the service provider. Inorder to keep the cables organized, it may be preferable that one ormore of the hanger assemblies 2120 a′-2120 c′ are similarly capable ofsliding from a distal stored position to a proximal position duringmaintenance. Thus, in the illustrated embodiment, each hanger assembly2120 a′-2120 c′ is slidable in the proximal and distal directions. Asliding mechanism may be provided, for example, by corresponding tracksin the top and bottom frame elements 2105′, or any other suitablemechanism. In one embodiment, hanger assemblies 2120 a′-2120 c′ have adistalmost sliding position which corresponds to a position that allowsthe cover 2180′ to be connected to base 2190′, and a proximalmostposition that corresponds to a proximalmost sliding position of thecassettes. Other features, such as handles, may be provided on one ormore of the hanger assemblies 2120 a′-2120 c′ to facilitate a user insliding the hanger assemblies in the proximal and/or distal directionsduring maintenance.

FIG. 32C illustrates an embodiment of a patch panel system 2100″ that isidentical to patch panel system 2100′ in all respects but one. Inparticular, whereas the hanger assemblies 2120 a′-2120 c′ of system2100′ are each individually able to slide in the proximal or distaldirection, hanger assemblies 2120 a″-2120 c″ are coupled by a couplingmember 2130″ so that hanger assemblies 2120 a″-2120 c″ are capable ofsliding together. In other words, if a user slides hanger assembly 2120b″ in the proximal direction, the coupling member 21310″, which may be abar or any other suitable structure, causes the other hanger assemblies2120 a″ and 2120 c″ to slide in unison with hanger assembly 2120 b″.Still further, while patch panel systems 2100′ and 2100″ are illustratedas including hanger assemblies that slide in the proximal and distaldirection, any one of the hanger assemblies (or all of the hangerassemblies) could be replaced with similar hanger assemblies that swingabout a pivot point between distal and proximal positions instead ofsliding. For example, FIG. 32D illustrates a group of cassettes 2110 b′″that may be used in a system similar to patch panel system 2100′ and/or2100″. A hanger assembly 2120 c′″ is illustrated in both a distalposition and a proximal position, although it should be understood thatthe two positions would not be achievable simultaneously. Similar tohanger assemblies 2120 c′ and 2120 c″, hanger assembly 2120 c′″ includesa plurality of hangers that correspond to individual cassettes 2110 b″,but may be coupled to a side wall of a chassis housing the cassettes2110 b′ at a hinge or pivot point 2140′″. In a stored condition, with acover covering the cassettes, hanger assembly 2120 c″ is preferably inthe distalmost position illustrated in FIG. 32D. During maintenance, thehanger assembly 2120 c″ could be pivoted or hinged about pivot point2140′″, and moved through a path illustrated by arrows in FIG. 32D tothe illustrated proximalmost position. It should be understood that oneor both of the other hanger assemblies in such a system could include asimilar pivoting or hinge mechanism instead of the sliding mechanisms ofFIGS. 32B-C.

FIGS. 33A-B are front and perspective views, respectively, of a cableorganizer 2200 that may be used with patch panel systems describedherein. Generally, cable organizer 2200 may provide one or morefunctions, including (i) keeping cables extending in generally a firstlateral direction (such as a horizontal direction) over a length of thecable, (ii) keeping individual cables or groups of cables layered and/orseparated from other cables or groups of cables, (iii) routing cablesthat are spaced apart a relatively large distance at a first lateral endof the cable organizer toward a second lateral end of the cableorganizer where the cables are relatively close to one another; and/or(iv) limiting positions of cable crossing, explained in greater detailbelow.

In the illustrated embodiment, cable organizer 2200 may include a plateor wall 2210. The wall 2210 may serve to couple a plurality of ribs 2220to the wall, with the wall being coupled to an inner surface of a hangerplate. If wall 2210 is included, it may include one or more apertures orother features to facilitate fastening the wall to the hanger plate. Inother embodiments, wall 2210 may be omitted and ribs 2220 may bedirectly coupled to the hanger plate, or otherwise may be formedintegrally with the hanger plate. For the purpose of explanation only,the first lateral end of the cable organizer 2200 refers to the rightedge of the cable organizer while the second lateral end of the cableorganizer refers to the left edge of the cable organizer in theparticular view of FIG. 33A. The direction between the first and secondlateral ends is referred to as the horizontal direction. The directionperpendicular to the horizontal direction of FIG. 33A, extending betweenthe bottom and the top of the cable organizer, is referred to as thevertical direction for purposes of explanation only. In the illustratedembodiment, each rib 2220 includes a first portion 2220 a extending fromthe first lateral end that extends completely or substantiallyhorizontally. Some or all of the ribs 2220 may include a second portion2220 b that curves or otherwise extends in a direction that has acomponent in the vertical direction. Preferably, the top-most rib 2220includes a second portion 2220 b that curves or extends generallydownward toward the bottom-most rib 2220. On the other hand, thebottom-most rib 2220 preferably includes a second portion 2220 b thatcurves or extends generally upward toward the top-most rib 2220. Asillustrated, the second portions 2220 b of the top-most and bottom-mostribs 2220 may have the greatest degree of curvature or extension in thevertical direction, while the rib 2220 positioned at or near thevertical center of the cable organizer 2200 may have a second portion2220 b with the smallest curvature or may even include no extension inthe vertical direction. The extent of vertical curvature of the secondportion 2220 b may increase for ribs 2220 closer to the top and bottomedges. Some or all of the ribs 2220 may include a third portion 2220 cthat terminates at the second lateral end that has a degree of curvaturetoward the top of the cable organizer 2200.

FIGS. 33C-33D show cable organizer 2200 being used in conjunction with apatch panel system similar or identical to patch panel system 1300. FIG.33C omits the cables, and FIG. 33D illustrates cable in an exemplaryuse. In particular, cable organizer 2220 is coupled to an interiorsurface of hanger plate 1321 a. In the embodiment of FIGS. 33C-D, twogroups of stacked fiber distribution cassettes 1310 b are positionednear a bottom of the patch panel system, while two groups of splittercassettes 1310 a are positioned near a top of the patch panel system.Generally, similar to the configuration shown in FIG. 28A, certaincables may exit a splitter cassette 1310 a, pass along a correspondinghanger of hanger unit 1323′, and then re-enter the same or anothersplitter cassette 1310 a, or enter a fiber distribution cassette 1310 b.As illustrated in FIG. 33D, cables that both exit and enter the samesplitter cassette 1310 a may loop around cable retainer 1330 a to helpsupport and organize the cables. If and when desired, a user may removean end of a cable from a splitter cassette 1310 a and connect the cableto a port in a fiber distribution cassette 1310 b, as described above inconnection with FIG. 28A. During such a transition, the cable may berouted along a surface of one of the ribs 2220 of cable organizer 2200,and then into the desired fiber distribution cassette 1310 b. In oneembodiment, the cables are routed along a bottom surface of each rib2220, and the number of ribs is equal or substantially equal to thenumber of fiber distribution cassettes 1310 b in the two groups.Preferably, each rib 2220 or one of the surfaces of each rib issubstantially aligned with a corresponding fiber distribution cassette1310 b, so that portion of the cable extending between the first lateralend of the cable organizer 2200 and a corresponding fiber distributioncassette 1310 b may extend in a direction substantially parallel (whichmay be referred to as the horizontal direction) to the first portions2220 a of the ribs 2220.

Due to the large number of cables extending in and out of the varioussplitter cassettes 1310 a and fiber distribution cassettes 1310 b,various cables may cross over one another and general cable congestionmay make it difficult to easily re-route cables, for example, when auser desires to re-route an end of a cable from a splitter cassette 1310a to a fiber distribution cassettes 1310 b. However, cable organizer2200 may facilitate particular routing of the cables to reduce thecongestion. For example, cables routed into one fiber distributioncassette 1310 b may be generally kept separated or layered from othercables routed into other fiber distribution cassettes 1310 b, with thatseparation being provided by ribs 2220 of the cable organizer 2200.Further, the cables routed through the second lateral end of the cableorganizer 2200 may be condensed to a smaller area, which may be providedby the fact that the ribs 2220 are spaced closer to one another at thesecond lateral end compared to the first lateral end. These cablesrouted through the second lateral end of the cable organizer 2200 mayextend in a direction substantially perpendicular to the first portions2220 a of the ribs 2220 (which may be referred to as the verticaldirection). With this configuration, points at which cables cross overone another are generally limited to the portion of the cables extendingvertically between the second end of the cable organizer 2200 and thecable retainer 1330 a. It has been found that the vertical portion ofthe cables is generally more loosely packed than other bent portions ofthe cables, and as a result it is generally easier to grasp anindividual cable and reposition that cable without significanthindrances from entanglement with other nearby cables.

In some embodiments using cable organizer 2200, additional covers may beprovided to help protect the cables. For example, in one embodiment, aplate may be hingedly coupled to the free end of the hanger plate 1321,the plate configured to rotate to cover the vertical portion of thecables positioned near the free end of the hanger plate.

FIG. 34 illustrates an example of a communication system 3000 accordingto another embodiment of the disclosure. System 3000 may include anenclosure or housing 3002 that may contain the remaining components ofsystem 3000. Housing 3002 is shown with an open front, though it shouldbe understood that a door or other component may be included withhousing 3002 to allow for housing to fully or substantially fully sealthe interior components. System 3000 may include a front base 3010 and arear base 3012, which may be integral with one another. Rear base 3012may have a greater height than front base 3010, with a first chassis3100 and a second chassis 3200 on the rear base 3012. First chassis 3100may be adapted to receive a plurality of cassettes in slidingconfiguration similar to other embodiments described herein. In theillustrated embodiment, first chassis may be configured to receive atleast three types of cassettes, including a first group of cassettes3300, a second group of cassettes 3400, and a third group of cassettes3500. Second chassis 3200, which may be positioned a spaced distancefrom first chassis 3100, and may be configured to receive one or moregroups of one or more splitter cassettes 3600.

The first group of cassettes 3300, illustrated in this embodiment asincluding two cassettes at the top of first chassis 3100, may be adaptedfor receiving a signal from a service provider and transmitting thatsignal to splitter cassettes 3600. For example, one or more cables 3310may extend from a position outside housing 3002 and into one or moreports in the rear of cassettes 3300. Cables 3310 may be pre-installed tocassettes 3300, for example so that a user does not normally orfrequently need to access the rear of cassettes 3300. However, it shouldbe understood that cables 3310 may, in some circumstances, pass throughthe front face of cassettes 3300 and connect to a rear port, as opposedto passing through the rear face of cassette 3300 and connecting to therear port. Further, as described in greater detail below, uponinstallation of a splitter cassette 3600, one or more cassettes 3300 maybe slid partially or completely out of first chassis 3100 to allow forcable(s) 3610 to connect the splitter cassette 3600 to cassette 3300.

The third group of cassettes 3500, illustrated in this embodiment asincluding three groups of six cassettes each adjacent rear base 3012,may be patch panel or fiber distribution cassettes similar to patchpanel cassettes 1310 b of FIG. 28A. Patch panel cassettes 3500 may beadapted for receiving a signal from splitter cassettes 3600 andconveying the signal to service subscribers. For example, one or morecables 3512 may be coupled to one or more ports in the rear of cassettes3500 and extend out of the housing 3002 to service subscribers. However,it should be understood that cables 3512 may, in some circumstances,pass through the front face of cassettes 3500 and connect to a rearport, as opposed to passing through the rear face of cassette 3500 andconnecting to the rear port. Cables 3512 may also be pre-installed tocassettes 3500, for example so that a user does not normally orfrequently need to access the rear of cassettes 3500. Further, asdescribed in greater detail below, at the appropriate time followinginitial installation of system 3000, one or more cassettes 3500 may beslid partially or completely out of first chassis 3100 to allow forcable(s) 3410, which are stored in a storage cassette 3400, to beremoved and connected to a port(s) in the patch panel cassette(s) 3500.

Based on the above description, it should be understood that system 3000may be provided to a customer with first cassettes 3300, secondcassettes 3400, and third cassettes 3500 installed in first chassis 3100and with cables 3310 and 3512 also coupled to the rear of cassettes 3300and 3500, respectively. Although, as described above, it should beunderstood that cables 3310 and 3512 may either pass directly to therear of corresponding cassettes 3300, 3500, or otherwise may passthrough a front face of those cassettes to access the port(s) in therear of those cassettes. After installation of system 3000, one or moresplitter cassettes 3600 may be installed into second chassis 3200,although in some embodiments one or more splitter cassettes 3600 may bepre-installed. One or more cables 3610 may then be coupled to ports inthe front of first cassettes 3300 and coupled to splitter cassettes 3600in order to convey a signal from the service provider to the splittercassettes 3600. It should be understood that, although the arrow ofcable 3610 is pointed toward the splitter cassettes 3600, the users maytypically only need to couple the ends of cables 3610 to ports incassettes 3300, as the splitter cassettes 3600 may typically be providedwith cables 3610 connected thereto. In other words, the arrows providedon the cables in FIG. 34 are generally indicative of the direction ofsignal transmission from a service provider source point to a servicesubscriber end point. Initially, one or more cables 3410 may beconnected from splitter cassettes 3600 to one or more of the secondgroup of cassettes 3400. The second group of cassettes 3400 may serve asstorage cassettes so that cables 3410 may be stored in an organizedfashion prior to connecting a cable conveying a signal from the serviceprovider to a particular service subscriber. The storage cassettes 3400may include any suitable features to hold the ends of cables 3410, forexample including structures similar to storage rack 1840 or 1840′. Inthe illustrated embodiment, system 3000 includes four storage cassettes3400 positioned between the first group of cassettes 3300 and the thirdgroups of cassettes 3500. As it becomes necessary to connect the serviceprovider to particular service subscribers, a user or technician mayremove a cable 3410 from a storage cassette 3400 and connect it to aport in the front of a patch panel cassette 3500. Cables connected tothe patch panel cassettes 3500 are labeled in FIG. 34 as cable 3510,although the same cables when connected to storage cassettes 3400 arelabeled as cables 3410.

It should be understood that a very large number of cables 3410 and 3510may couple splitter cassettes 3600 to corresponding storage cassettes3400 and patch panel cassettes 3500, with each of those cables capableof connecting to any port or storage location in any of the patch panelcassettes 3500 or storage cassettes 3400, respectively. As a result, alarge number of cables, with a corresponding large mass, usually needsto be supported within system 3000, preferably in a manner that allowsfor easy access manipulation to change cables positions when needed. Inthe illustrated embodiment of system 3000, cables 3410, 3510, and 3610may be largely positioned in a trough 3700. Trough 3700 may be formed bya front wall of rear base 3012, the top face of front base 3010, and apanel 3800. Panel 3800 may be hingedly coupled to front base 3010, andmay be substantially flat or substantially “L”-shaped. Panel 3800 isillustrated in FIG. 34 in an open condition (for example for accessduring maintenance), and may be rotated upwards and toward rear base3012 to transition to a stored condition (for example after completingmaintenance). One or more hangers (not illustrated) may be provided onpanel 3800 so that portions of cables 3410, 3510, and 3610 passingthrough trough 3700 may be secured to panel 3800. Thus, system 3000 mayallow for cable maintenance with as little as a single hanger forsecuring the cables.

It should be understood that the exact number and positioning ofcassettes 3300, 3400, and 3500 may be different than illustrated. Forexample, in some embodiments cassettes 3300 may be positioned near thebottom of first chassis 3100, with the top of first chassis 3100receiving patch panel cassettes 3500. Similarly, second chassis 3200 isillustrated as receiving a first group of vertically oriented splittercassettes 3600 stacked above a second group of vertically orientedsplitter cassettes 3600. The second chassis 3200 may be adapted toreceive any number of splitter cassettes 3600 in each group, asrepresented by the dashed double-arrowed lines within second chassis3200. Second chassis 3200 may include slots or other structures tofacilitate sliding splitter cassettes 3600 into or out of second chassis3200. However, it should be understood that in some embodiments, secondchassis 3200 may be adapted to receive a different number of splittercassettes 3600, or a different number of groups of splitter cassettes3600, in a same or different orientation as shown in FIG. 34.

FIG. 35 illustrates a communication system 4000 similar to system 3000of FIG. 34 with certain differences. Generally, similar or identicalcomponents of systems 3000 and 4000 are provided with part numbers thatare 1000 apart. The components of system 4000 may be provided within anenclosure or housing 4002 substantially similar to housing 3002. Firstchassis 4100 may be substantially identical to first chassis 3100, andsimilarly adapted to receive a first group of cassettes 4300, a secondgroup of storage cassettes 4400, and a third group of patch panelcassettes 4500. The cable components of system 4000 may be functionallyidentical to those of system 3000. For example, cable(s) 4310 may conveysignal from a service provider to a rear of cassettes 4300, with cables4610 conveying signals to splitter cassettes 4600 from a front ofcassettes 4300. It should be understood that, in certain embodiments,cables 4310 may pass through a front opening in cassettes 4300 as theyare routed toward the rear ports into cassettes 4300. Cables 4410 mayextend from the front of splitter cassettes 4600 to storage locationswithin storage cassettes 4400. At the appropriate time, cables 4410 maybe coupled to ports in the front of patch panel cassettes 4500, theconnected cables labeled as 4510 in the figures. Cables 4512 may becoupled to the rear of patch panel cassettes 4500 and convey a signalfrom patch panel cassettes 4500 to service subscribers. As with cables4310, it should be understood that cables 4512 may pass through frontopenings in patch panel cassettes 4500 as they are routed toward rearports in those cassettes.

The main differences between system 3000 and 4000 are the position ofsecond chassis 4200 and the configuration of panels 4800 a, 4800 b. Inparticular, second chassis 4200 may be provided directly on top of firstchassis 4100, or spaced a distance from the top wall of first chassis4100. Second chassis 4200 may be configured to receive any number ofsplitter cassettes 4600 therein. In one example, second chassis 4200 maybe configured to receive a single group of splitter cassettes 4600 equalto the total number of splitter cassettes 3600 receivable within secondchassis 3200. As with system 3000, a very large number of cables 4410,4510, and 4610 may extend from the front of splitter cassettes 4600.Thus, it may be preferable that a front face of second chassis 4200 andfront faces of splitter cassettes 4600 are set back a spaced distancefrom the front face of first chassis 4100. Those cables may be storedwithin a tray, bin, or trough positioned on top of first chassis 4100 infront of second chassis 4200. Preferably, second chassis 4200 is spaceda distance from the top of first chassis 4100 so that the cable trough(not separately shown in FIG. 35) does not interfere with slidingsplitter cassettes 4600 into or out of second chassis 4200.

While the portions of cables 4410, 4510, and 4610 directly in front ofsecond chassis 4200 may be stored within the trough described above,additional lengths of cables 4410, 4510, and 4610 may be desirablyorganized with additional hangers on panels 4800 a and 4800 b, which maybe hingedly coupled to side walls of first chassis 4100. Panels 4800 aand 4800 b may include features similar or identical to the varioushanger plates described herein, including for example the hanger platesshown and described in connection with FIG. 33C, and alternativelyincluding any suitable accessories described in connection with suchhanger plates, such as cable organizer 2200. It should be understoodthat the various alternative configurations of the number and relativepositioning of cassettes 3300, 3400, 3500, and 3600 described inconnection with system 3000 may apply similarly to cassettes 4300, 4400,4500, and 4600 of system 4000.

FIG. 36A illustrates a communication system 5000 similar to systems3000, 4000 of FIGS. 34-35 with certain differences. Generally, similaror identical components of systems 4000 and 5000 are provided with partnumbers that are 1000 apart. The components of system 5000 may beprovided within an enclosure or housing 5002 substantially similar tohousing 4002. First chassis 5100 may be substantially identical to firstchassis 4100, and similarly adapted to receive a first group ofcassettes 5300, a second group of storage cassettes 5400, and a thirdgroup of patch panel cassettes 5500. In the illustrated embodiment ofFIG. 36A, the storage cassettes 5400 are provided on the top of thefirst chassis 5100, the first group of cassettes 5300 are provided onthe bottom of the first chassis 5100 adjacent the second chassis 5200,and the patch panel cassettes 5500 are positioned between the firstgroup of cassettes 5300 and the second group of storage cassettes 5400.The cable components of system 5000 may be functionally identical tothose of system 4000. For example, cable(s) 5310 may convey signal froma service provider to a rear of cassettes 5300, with cables 5610conveying signals to splitter cassettes 5600 from a front of cassettes5300. It should be understood that, in certain embodiments, cables 5310may pass through a front opening in cassettes 5300 as they are routedtoward the rear ports into cassettes 5300. Cables 5410 may extend from afront of splitter cassettes 5600 to storage locations within storagecassettes 5400. At the appropriate time, cables 5410 may be coupled toports in the front of patch panel cassettes 5500, the connected cableslabeled as 5510 in the figures. Cables 5512 may be coupled to the rearof patch panel cassettes 5500 and transmit signal from patch panelcassettes 5500 to service subscribers. As with cables 5310, it should beunderstood that cables 5512 may pass through front openings in patchpanel cassettes 5500 as they are routed toward rear ports in thosecassettes.

The main differences between system 5000 and systems 3000 and 4000 arethe position of second chassis 5200 and the configuration of panels 5800a, 5800 b. In particular, second chassis 5200 may be provided directlybelow first chassis 5100, and may be positioned on a base 5900. Secondchassis 4200 may be configured to receive any number of splittercassettes 5600 therein. In one example, second chassis 5200 may beconfigured to receive a single group of splitter cassettes 5600 similarto second chassis 4200. As with systems 3000 and 4000, a large number ofcables 5410, 5510, and 5610 may extend from the front of splittercassettes 5600. Although a front face of second chassis 5200 and frontfaces of splitter cassettes 5600 are illustrated as being set back adistance spaced from the front face of base 5900, it may be preferablethat the front face of second chassis 5200, as well as the front facesof cassettes 5600, and the front face of base 5900 are substantiallyaligned (e.g. without a set-back) so that cables extending from splittercassettes 5600 drop immediately into trough 5700. A portion of thosecables may be stored within a trough 5700. Trough 5700 may be defined bya front face of base 5900 and an “L”-shaped extension member 5910. Theuse of trough 5700 at the bottom of system 5000 may be preferablebecause the large number of cables may have a large mass and storing themajority of those cables within trough 5700 may reduce the amount ofremaining cable mass to be supported by other components of system 5000,such as panels 5800 a, 5800 b.

Panels 5800 a and 5800 b are illustrated as relatively narrow panelsthat are hingedly coupled to side walls of first chassis 5100. It shouldbe understood that in other embodiments, one or both panels 5800 a and5800 b may be fixed to first chassis without hinges, or otherwise mayhave a limited amount of rotation such as 45 or 90 degrees of rotation.Panels 5800 a and 5800 b may be significantly narrower than panels 4800a, 4800 b of system 4000, as panels 5800 a and 5800 b only need tosupport a relatively small amount of cable mass compared to panels 4800a and 4800 b of system 4000. In the illustrated embodiment, each panel5800 a and 5800 b includes one or more hanger units similar or identicalto hanger units 1323′ of FIG. 23A.

It should be understood that the various alternative configurations ofthe number and relative positioning of cassettes 4300, 4400, 4500, and4600 described in connection with system 4000 may apply similarly tocassettes 5300, 5400, 5500, and 5600 of system 5000. For example, in analternative embodiment, the patch panel cassettes 5500 may be providedcloser to the top of first chassis 5100, with storage cassettes 5400positioned between the patch panel cassettes 5500 and the first group ofcassettes 5310.

FIGS. 36B-E illustrate communication system 5000 with certain additionalcomponents and with certain modified components. In particular, therelative positioning of the first group of cassettes 5300, the storagecassettes 5400, and the patch panel cassettes 5500 is different in FIG.36B, with the bottom-most cassettes (three cassettes in theillustration) being storage cassettes 5400, the top-most cassettes(three groups of six cassettes in the illustration) being patch panelcassettes 5500, and the cassettes between those two groups being thefirst group of cassettes 5300 (three cassettes in the illustrationpositioned directly above the storage cassettes 5400). Second chassis5200 is illustrated as including splitter cassettes 5600 arranged in twogroups of cassettes positioned side-by-side. The second chassis 5200 maybe positioned on top of base 5900′, which may be slightly narrower thanthe base 5900 shown in FIG. 36A. The trough 5700 may be formed betweenthe front face of a plate connected to base 5900′, one or more sideextensions 5910′ of that plate, and/or a bottom extension (best shown inFIG. 36E) extending between bottom ends of the side extensions 5910′. Inaddition, panel 5800 a may be positioned on a cable guide 5810 a′, andpanel 5810 b may be positioned on a cable guide 5810 b′. Cable guides5810 a′ and 5810 b′ may be statically fixed to first chassis 5100, ormay be hinged and rotatable with respect to first chassis 5100. Cableguide 5810 a′ may provide additional means for guiding and organizingcables of system 5000. As illustrated, cable guide 5810 a′ may includean outermost fin 5812 a′, a middle fin 5814 a′, and an inner fin 5816′which may each extend from a point near panel 5800 a′ in a directionaway from the panel and downward toward trough 5700. The opposite panel5800 b′ may similarly be positioned on or within a cable guide 5810 b′that has an outermost fin 5812 b′, a middle fin 5814 b′, and an innerfin 5816 b′. The cable guides 5810 a′ and 5810 b′ may include additionalcable guide structures, such as retainers 5818 a′, which may help keepcables within the boundaries of cable guide 5810 a′, or spool member5818 b′ around which cables may be wrapped while maintaining a minimumbending radius for the cables.

FIG. 36C illustrates system 5000 and certain cables being connectedthereto and maintained by various portions of the cable guides 5810 a′,5810 b′. For example, FIG. 36C illustrates a cable 5610 extending from asplitter cassette 5600 to a cassette 5300 in the first group. Thiscable, as noted above, may convey a signal from the cassette 5300 to thesplitter cassette 5600. It should be understood that splitter cassettes5600 may be provided as units with cables already attached thereto, sothat a free end of cable 5610 is attached to one of the first cassettes5300, as indicated by the arrow, to couple the two cassettes to eachother, even though a signal is generally conveyed in the directionopposite the arrow of cable 5610 (although it should be understood thatin many fiber optic cables, signal transmission or conveyance can bebi-directional). In some examples, each splitter cassette 5600 mayinclude a single cable 5610 coupled thereto, each of which may be storedand/or supported in and by trough 5700. In addition, FIG. 36Cillustrates a cable 5410 extending from a splitter cassette 5600 to astorage cassette 5400, with the cable 5410 stored and/or supported inand by trough 5700. Cable 5410 is provided in dashed lines to indicatethat cable 5410 may be positioned only temporarily in storage cassette5400, until a user desires to connect cable 5410 to a patch panelcassette 5500, the newly connected cable indicated as cable 5510 in FIG.36C. Cables 5510, in addition to being stored and/or supported in or bytrough 5700, may further be organized and guided by elements of cableguide 5810 a′. For example, all cables 5510 may pass behind cableretainers 5818 a′ to keep the cables 5510 within the general confines ofcable guide 5810 a′. Cables 5510 routed to the top-most group ofcassettes 5500 may be guided between the outermost fin 5812 a′ and themiddle fin 5814 a′. Cables 5510 routed to the middle group of cassettes5500 may be guided between the middle fin 5814 a′ and the inner fin 5816a′. Cables 5510 routed to the bottom-most group of cassettes 5500 may beguided between the inner fin 5816 a′ and the inner cable retainer 5818a′. It should be understood that generally, cables 5510 (or cables 5410prior to connection to patch panel cassettes 5500) may be the largestvolume of cables in system 5000. Thus, the various fins of cable guide5810 a′ may help separate and organize the large mass of cablesextending from splitter cassettes 5600 to patch panel cassettes 5500.Another cable 5520 is illustrated in FIG. 36C connecting two patch panelcassettes 5500, with cable 5520 being wrapped or otherwise spooledaround spool member 5818 b′ to guide and support the cable. It should beunderstood that cable guide 5810 b′ may be used similarly to cable guide5810 a′, and although certain cables are shown on in FIG. 36C as beingrouted along either cable guide 5810 a′ or 5810 b′, any cable could berouted along either of the cable guides 5810 a′, 5810 b′, depending onthe preference of the user. Further, although an outer housing is notillustrated in connection with FIGS. 36B-C, it should be understood thatany suitable outer housing may be used, including housings for mountingas wall mounts, pole mounts, or pad mounts (e.g. mounted to concretepads).

FIG. 36D is a perspective view of system 5000 showing cable guides 5810a′ and 5810 b′ in a first position. Although enclosure or housing 5002is not separately illustrated in FIG. 36D, it should be understood that,in the illustrated first position, cable guides 5810′a and 5810 b′ mayboth be positioned fully within the housing, for example so that ahousing door can close to fully contain the components of system 5000within the housing. As can be seen in FIG. 36D, a side hanger 1340 a maybe provided on a side wall of first chassis 5100, which may be similaror identical to side hanger 1340 a of FIG. 21A. However, it should beunderstood that other types and numbers of side hangers, including sidehanger 1340 b or FIG. 21B, may be positioned on either side wall offirst chassis 5100 to help store, guide, and/or organize cablesassociated with system 5000. If a user desires to access the sides orrear of portions of system 5000 within housing 5002, for example toaccess cables on side hanger 1340 a, the user may rotate one or bothcable guides 5810 a′, 5810 b′ (and associated plates 5800 a, 5800 b) ina direction so that the hanger units on plates 5800 a, 5800 b movetoward the front face of the cassettes 5300, 5400, 5500 within the firstchassis 5100. FIG. 36E illustrates cable guide 5810 b′ and associatedplate 5800 b having been rotated so that the hanger unit associated withplate 5800 b has moved to be positioned at the front of the cassettes,while cable guide 5810 a′ and associated plate 5800 a remain in thefirst position illustrated in FIG. 36B. In some embodiments, the rangeof rotation of cable guides 5810 a′ and 5810 b′ (and associated cableplates 5800 a and 5800 b, respectively) may be limited to a range ofabout 90 degrees, or to a range of about 180 degrees. As with variousother embodiment disclosed herein, the cable guides 5810 a′ and 5810 b′(and associated hanger units and cable plates 5800 a and 5800 b) may becoupled directly or indirectly to first chassis 5100 via one or morehinges so that the cable guides rotate about an axis that issubstantially orthogonal to plane that is substantially coplanar withbottom faces of the patch panel cassettes 5500. In other words, thedirection in which patch panel cassettes 5500 may slide is orthogonalthe axis about which the cable guides are rotatable.

FIGS. 36F-G illustrate views of system 5000 in an embodiment of housing5002 to illustrate one exemplary configuration for securing system 5000to the housing 5002. In the illustrated example, housing 5002 mayinclude one or more top mounting rails 5004 secured to a bottom surfaceof the top wall of housing 5002. Similarly, housing 5002 may include oneor more bottom mounting rails 5006 secured a top surface of the bottomwall of housing 5002. In the illustrated example, housing 5002 includestwo top mounting rails 5004 and two bottom mounting rails 5006, althoughmore or fewer of each rail may be provided as desired. As bestillustrated in FIG. 36G, each of the mounting rails 5004, 5006 may takethe form of a bracket having an “L”-shape or a “U”-shape, although othershapes may be suitable. In the illustrated example, a top wall of firstchassis 5100 (or otherwise a separate plate or support mounted to thetop wall of first chassis 5100) may be coupled to the top mounting rails5004, for example via screws, bolts, or any other suitable fasteners.The bottom surface of base 5900′ (or otherwise a separate plate orsupport mounted to the bottom surface of base 5900′) may similarly becoupled to the bottom mounting rails 5006 via screws, bolts, or anyother suitable fasteners. With this configuration, system 5000 may besecured within housing 5002 to reduce the likelihood of anyunintentional movement of the system 5000 with respect to the housing5002. It should be noted that housing 5002 is illustrated with an accessport in the bottom of the housing 5002, similar to port 1004 of housing1002 described above, but more access ports may be provided in anydesired position of housing 5002.

FIG. 36H illustrates an enlarged perspective view of one half of thesecond chassis 5200 of system 5000, which is shown as including threesplitter cassettes 5600 inserted into three corresponding cassetteslots. However, it should be understood that the splitter cassettehousing of FIG. 36H may be used with other systems described herein,including systems 3000 and 4000. FIG. 36H illustrates, among otherthings, that second chassis 5200 does not need to include vertical wallsextending completely from top to bottom walls of the chassis or otherseparator members to keep the various splitter cassettes 5600 organizedin their desired positions. For example, second chassis 5200 may includea plurality of biased or spring-loaded members 5210 to help maintainsplitter cassettes 5600 in position. In the illustrated example, the topwall of chassis 5200 includes two spring members 5210 protrudingdownward aligned with one another, while the bottom wall includesanother two spring members 5220 protruding upward aligned with oneanother, for each splitter cassette 5600 that may be received in thesecond chassis 5200. Each spring member 5210 may be angled so that theportions near the front and rear of second chassis 5200 extend farthertoward the top wall of the chassis, while spring members 5220 may besimilarly angled so that the portions near the front and the rear ofsecond chassis 5200 extend farther toward the bottom wall of thechassis. However, the portions of spring members 5210 and 5220 nearestthe front or rear of second chassis 5200 may include a ramped surface,such that the portion of the spring members with the greatest protrusionis positioned a distance away from the front or the rear of the secondchassis 5200. With this configuration, as a cassette 5600 is slid into arespective slot within chassis 5200, the springs of spring members 5210,5220 begin to compress to provide clearance for the cassette 5600 tomove into the slot. As the cassette 5600 slides into position, thesprings of spring members 5210, 5220 may begin to relax a small amount,resulting in lips 5222 of the front spring members 5220 projectingupward so that cassettes 5600 cannot be unintentionally removed from thesecond chassis 5200. In some embodiments, the front spring members 5210may also include lips similar to lips 5222. The rear spring members5210, 5220 may not need similar lips, particularly when the rear ofsecond chassis 5200 is closed, but in some circumstances similar lipsmay be appropriate. Further, in some embodiments, the rear springmembers 5210, 5220 may be omitted. In other embodiments, cassettes 5600may include indentations, tracks, grooves, or similar features so thatspring members 5210, 5220 protrude into those grooves to further helpsecure the cassettes 5600 in the desired position or slot within secondchassis 5200. Still further, it should be understood that the springmembers 5210, 5220 may be positioned such that side edges of the springmembers that protrude above a bottom wall of the second chassis 5200 maybe adapted to contact bottom and top side edges of a splitter cassette5600 as the splitter cassette is inserted into the chassis 5200, so thatthe spring members serve as an additional guide during insertion andsupport after insertion.

FIGS. 36I-J illustrate an additional locking bar 5230 in unlocked andlocked conditions, respectively. Locking bar 5230 may be provided tofurther secure cassettes 5600 within second chassis 5200. It should beunderstood that locking bar 5230 may be provided in addition to, orinstead of, the lips 5222. Locking bar 5230 may include one or two sidemembers 5230 a having a first end pivotably coupled to one or twocorresponding side walls of second chassis 5200. Side member(s) 5230 amay extend from the first end to a second end near the front of secondchassis 5200. A bar member 5230 b may be coupled to the second end ofthe side member 5230 a. If two side members 5230 a are included, the barmember 5230 b may extend between the second ends of the two side members5230 a. In the unlocked position of locking bar 5230 shown in FIG. 36I,bar member 5230 b is positioned at or above the tops of cassettes 5600so that the bar member 5230 b does not restrict or substantiallyrestrict the cassettes 5600 from sliding into or out of the secondchassis 5200. As shown in FIG. 36J, the locking bar 5230 may betransitioned to the locked condition by pivoting the second end(s) ofthe side member(s) 5230 a, about the first end of the side member(s)5230 a, toward the bottom wall of second chassis 5200. This motioncauses the bar member 5230 b to drop downward as well, so that the barmember 5230 b is in contact with or is adjacent the fronts of thecassettes 5600. In the illustrated example, in the locked condition ofthe locking bar 5230, the bar member 5230 b is in contact with orpositioned adjacent to the handles 5620 of the cassettes 5600, describedin greater detail below. In the illustrated example, side members 5230 aare positioned outside the side walls of second chassis 5200, and secondchassis 5200 includes a slot through which bar member 5230 b extends,the slot generally following the path along which bar member 5230 bmoves as the locking bar 5230 transitions between the locked andunlocked conditions. However, in other embodiments, the side members5230 a may be positioned inside the side walls of the second chassis5200. In one embodiment, locking bar 5230 may be biased, for example viaa spring, to the locked condition. In another example, the locking bar5230 may tend to fall into the locked condition due mainly or solely tothe force of gravity pulling the locking bar 5230 downward. Whether thelocking bar 5230 is actively biased or passively biased (e.g. due togravity) to the locked condition, any cassettes 5600 within chassis 5200will be highly unlikely to unintentionally slide out of the secondchassis 5200, for example due to vibrations of system 5000. If a userdesires to slide a cassette 5600 into or out of the second chassis 5200,the user may temporarily transition the locking bar 5230 to the unlockedcondition, at which point the bar member 5230 b is positioned so thatcassettes 5600 may be slid into or out of the second chassis 5200. Afterthe cassette(s) 5600 have been slid into or removed from the secondchassis 5200, the user may simply let go of the locking bar 5230, whichwill transition to the locked condition due to the active or passivebias. However, in other embodiments, locking bar 5230 need not be biasedat all, so that the locking bar 5230 only transitions between the lockedand unlocked conditions upon application of intentional force by theuser. The slot(s) through which the second end of side member(s) 5230 aslide as the locking bar 5230 transitions between the locked andunlocked conditions may also include a bump 5232 or other protrusionadjacent a bottom end of the slot. In other words, the bump 5232 may bespaced a distance from the bottom of the slot equal or slightly largerthan the diameter of bar member 5230 b. With this configuration, thebump 5232 may help resist any unintentional movement of the bar member5230 b upward toward the unlocked condition, as the bump 5232 mayprovide additional frictional engagement, although that frictionalengagement may be readily overcome with an intentional force applied tolocking bar 5230 upward or downward.

FIG. 36K illustrates in more detail an example of a splitter cassette5600, although it should be understood that the splitter cassette shownin FIG. 36K may be used in place of other splitter cassettes describedin connection with other embodiments of communication systems herein.Splitter cassette may include a handle 5620 to assist a user in slidingthe cassette 5600 into or out of a housing such as second chassis 5200.In the illustrated embodiment, a front face of handle 5620 issubstantially coplanar with other front portions of the cassette 5600,the front portions of the cassette 5600 directly adjacent the handle5620 being recessed or indented in order to form the handle 5620. Asingle cable 5610 may extend from splitter cassette 5600, and may passthrough a strain relief element 5612 coupled to the front face of thecassette. Cable 5610 of FIG. 36K corresponds to cable 5610 of FIGS. 36Aand 36C, and may be intended to connect the splitter cassette 5600 toanother cassette 5300 that is coupled via additional cables to serviceprovider, such that the signal from the service provider is conveyed tocassette 5300, and then through cable 5610 to splitter cassette 5600.Further, a plurality of additional cables 5410 may extend from splittercassette 5600, for example via another strain relief member. The numberof cables 5410 may be dependent upon the particular splitter cassette5600, and may be any desired number, such as eight, sixteen, thirty-two,etc. It should be understood that cables 5410 of FIG. 36K correspond tocables 5410 of FIGS. 36A and 36C when coupled to a storage cassette5400, while cables 5410 of FIG. 36K correspond to cables 5510 of FIGS.36A and 36C when coupled to a patch panel cassette 5500. When initiallyprovided, a connector 5412 of each cable 5410 of splitter cassette 5600may be stored in a holding element 5614 of a storage plate 5616. Thestorage plate 5616 and holding elements 5614 may be similar to storagerack 1840 of FIGS. 28B-C or storage rack 1840′ of FIG. 28D. Connectors5412 may be pre-installed on holding elements 5614 of storage plate 5616so that, upon initial installation of splitter cassette 5600 into secondchassis 5200, the storage plate 5616 may be readily be clipped into,snapped into, or otherwise coupled to a corresponding receivingstructure within a storage cassette 5400. This may eliminate the needfor a user to individually couple each connector 5412 of each cable 5410to a corresponding port within a storage cassette 5400 for storage priorto the connector being removed and connected to a port in a patch panelcassette 5500.

Although system 5000 may include hanger units 1323′, alternative typesof hanger units 1323″ may be preferable for system 5000. Hanger unit1323″ may include a support 1324″ and a plurality of individual hangers1325″ extending from the support 1324″. The free end of each hanger1325″ may include a latch member 1326″ that is hingedly coupled to thefree end, for example by a living hinge mechanism. The free end of eachhanger 1325″ may also include a lip similar to lips 1327′ of hangerunits 1323′. It should be understood that hanger unit 1323″ may includesubstantially the same components of hanger unit 1323′, with the mainexception being that hangers 1325″, and thus latch members 1326″, may beangled with respect to a longitudinal axis of support 1324″. Forexample, as shown in FIG. 37B, hangers 1325″ may form an angle α5 ofbetween about 30 degrees and about 60 degrees, including about 45degrees, with respect to the longitudinal axis of support 1324″. Whereashanger units 1323′ may be used interchangeably on hanger plates orpanels on either side of a patch panel system, hanger units 1323″ may bedesigned for use on a hanger plate on a first side of a patch panelsystem, while a mirror image of hanger unit 1323″ may be preferably usedon a hanger plate on a second side of patch panel system. For example,the hanger unit 1323″ illustrated in FIGS. 37A-C may be best suited foruse on panel 5800 a of system 5000, whereas a mirror image of hangerunit 1323″ may be best suited for use on panel 5800 b of system 5000.One potential benefit of hanger unit 1323″ compared to hanger unit 1323′is that cables C resting on hangers 1325″ may encounter a more gradualangle compared to cables C resting on hangers 1325′ of hanger unit1323′, and thus provide that a minimum bending radius for the cables Cis maintained. For example, as shown in FIG. 37C, cables extendingbeyond each side of hangers 1325″ encounter angles α6 and α7 of about135 degrees if a5 is about 45 degrees. This may be a gentler anglecompared to the 90 degree angle that cables supported by hangers 1325′of hanger unit 1323′ may encounter in addition to the rounded edge(s)that may typically be fabricated on edges of the parts of hangers 1325′that contact cables. In other words, hangers 1325′ of hanger unit 1323′may include rounded edges or rounded extensions to help maintain aminimum bending radius of cables supported by the hangers 1325′, butsuch features may require that hangers 1325′ are relatively wide. It maybe difficult to provide such rounded edges or rounded extensions onhangers 1325″ of hanger units 1323″ because hungers 1325″ are narrowerthan hangers 1325′. Instead, as described above, a minimum bendingradius may be obtained in that narrow space by positioning hangers 1325″at an angle relative to the longitudinal axis of support 1324″. As notedabove, the same angles may be achieved for cables on panel 5800 b ofsystem 5000 by using a hanger unit having a mirrored configuration ofhanger unit 1323″. Although hanger unit 1323″ (and corresponding mirrorconfigurations) may be particularly suited for system 5000 having narrowpanels 5800 a, 5800 b, it should be understood that hanger 1323″ may beused with other communication systems described herein.

Although the invention herein has been described with reference toparticular embodiments, it is to be understood that these embodimentsare merely illustrative of the principles and applications of thepresent invention. It is therefore to be understood that numerousmodifications may be made to the illustrative embodiments and that otherarrangements may be devised without departing from the spirit and scopeof the present invention as defined by the appended claims.

1. A communication system comprising: a first chassis having first andsecond side walls and adapted to slidably receive therein a plurality ofcassettes; and a first cable hanger assembly having a first side edgehingedly coupled to the first side wall of the first chassis, the firstcable hanger assembly including a plurality of first hangers adapted tosupport cables thereon, an axis of rotation of the first cable hangerassembly being substantially orthogonal to a direction in which theplurality of cassettes are slidable, wherein the first cable hangerassembly is rotatable from a first position to a second position so thatduring rotation from the first position to the second position, theplurality of first hangers move toward front faces of the plurality ofcassettes.
 2. The communication system of claim 1, further comprising: asecond chassis coupled to the first chassis and positioned verticallyadjacent the first chassis, the second chassis adapted to receive aplurality of splitter cassettes having splitter modules therein; and atrough for storing cables extending from the splitter cassettesrespectively to the plurality of cassettes.
 3. The communication systemof claim 2, wherein the second chassis is positioned beneath the firstchassis.
 4. The communication system of claim 3, wherein the trough ispositioned beneath the second chassis.
 5. The communication system ofclaim 1, further comprising a second cable hanger assembly having asecond side edge hingedly coupled to the second side wall of the firstchassis, the second cable hanger assembly including a plurality ofsecond hangers adapted to support cables thereon, an axis of rotation ofthe second cable hanger assembly being substantially orthogonal to thedirection in which the plurality of cassettes are slideable.
 6. Thecommunication system of claim 5, wherein, in a stored condition of thesystem, an interior surface of the second cable hanger assemblyconfronts the front faces of the plurality of cassettes, and an interiorsurface of the first cable hanger assembly confronts an exterior surfaceof the second cable hanger assembly.
 7. The communication system ofclaim 1, wherein the plurality of first hangers is coupled to a firstguide panel of the first cable hanger assembly, the first guide panelincluding a plurality of fins each extending between a first end and asecond end, the plurality of fins configured to guide the cables.
 8. Thecommunication system of claim 7, wherein the first ends of the pluralityof fins are positioned adjacent the first side wall of the first chassisand extend to the second ends in a direction away from the first sidewall and toward a bottom of the first chassis.
 9. The communicationsystem of claim 8, wherein the plurality of fins includes a first fin, asecond fin, and a third fin.
 10. The communication system of claim 9,wherein the first end of the first fin is positioned adjacent a top ofthe first chassis.
 11. The communication system of claim 10, wherein thefirst end of the second fin is positioned between the first end of thefirst fin and the bottom of the first chassis, and the second end of thesecond fin is positioned closer to the first side wall of the firstchassis than is the second end of the first fin.
 12. The communicationsystem of claim 11, wherein the first end of the third fin is positionedbetween the first end of the second fin and the bottom of the firstchassis, and the second end of the third fin is positioned closer to thefirst side wall of the first chassis than is the second end of thesecond fin.
 13. The communication system of claim 1, wherein a firstgroup of the cassettes is positioned adjacent a top of the firstchassis, a second group of the cassettes is positioned beneath the firstgroup of cassettes, and a third group of the cassettes is positionedbeneath the second group of cassettes.
 14. The communication system ofclaim 12, wherein the first end of the first fin is positioned adjacenta top of a first group of the cassettes that is positioned adjacent thetop of the first chassis, the first end of the second fin is positionedadjacent a top of a second group of the cassettes that is positionedbeneath the first group of cassettes, and the first end of the third finis positioned adjacent a top of a third group of the cassettes that ispositioned beneath the second group of cassettes.
 15. The communicationsystem of claim 1, wherein the first position of the first cable hangerassembly is a maintenance condition and the second position of the firstcable hanger assembly is a stored condition, the front faces of theplurality of cassettes being exposed in the maintenance condition. 16.The communication system of claim 6, further comprising a baseconfigured to be fixedly coupled to a bottom of the first chassis, and acover adapted to couple to the base and at least partially surround thefirst chassis when the first cable hanger assembly is in the storedcondition.
 17. The communication system of claim 16, wherein the baseincludes at least one latch for latching the cover to the base, whereinthe cover includes an exterior surface having a bottom end with anupward facing hook, and the at least one latch includes a lever membercoupled to a hook member, the hook member having a downward facing hookadapted to engage the upward facing hook of the cover.
 18. Thecommunication system of claim 1, further comprising a first side hangercoupled to the first side wall of the first chassis, the first sidehanger including a plurality of first protrusions adapted to guidecables.
 19. The communication system of claim 1, wherein the first cablehanger assembly is rotatable a maximum of about 180 degrees about theaxis of rotation.
 20. The communication system of claim 1, wherein theplurality of cassettes includes patch panel cassettes and storagecassettes.